Writeup Exploits

60,559 exploits tracked across all sources.

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CVE-2026-26955 WRITEUP HIGH
FreeRDP < 3.23.0 - Heap Buffer Overflow via GDI Surface Command ClearCodec
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a malicious RDP server can trigger a heap buffer overflow in FreeRDP clients using the GDI surface pipeline (e.g., `xfreerdp`) by sending an RDPGFX ClearCodec surface command with an out-of-bounds destination rectangle. The `gdi_SurfaceCommand_ClearCodec()` handler does not call `is_within_surface()` to validate the command rectangle against the destination surface dimensions, allowing attacker-controlled `cmd->left`/`cmd->top` (and subcodec rectangle offsets) to reach image copy routines that write into `surface->data` without bounds enforcement. The OOB write corrupts an adjacent `gdiGfxSurface` struct's `codecs*` pointer with attacker-controlled pixel data, and corruption of `codecs*` is sufficient to reach an indirect function pointer call (`NSC_CONTEXT.decode` at `nsc.c:500`) on a subsequent codec command — full instruction pointer (RIP) control demonstrated in exploitability harness. Users should upgrade to version 3.23.0 to receive a patch.
CVSS 8.8
CVE-2026-26965 WRITEUP HIGH
FreeRDP <3.23.0 - Memory Corruption
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, in the RLE planar decode path, `planar_decompress_plane_rle()` writes into `pDstData` at `((nYDst+y) * nDstStep) + (4*nXDst) + nChannel` without verifying that `(nYDst+nSrcHeight)` fits in the destination height or that `(nXDst+nSrcWidth)` fits in the destination stride. When `TempFormat != DstFormat`, `pDstData` becomes `planar->pTempData` (sized for the desktop), while `nYDst` is only validated against the **surface** by `is_within_surface()`. A malicious RDP server can exploit this to perform a heap out-of-bounds write with attacker-controlled offset and pixel data on any connecting FreeRDP client. The OOB write reaches up to 132,096 bytes past the temp buffer end, and on the brk heap (desktop ≤ 128×128), an adjacent `NSC_CONTEXT` struct's `decode` function pointer is overwritten with attacker-controlled pixel data — control-flow–relevant corruption (function pointer overwritten) demonstrated under deterministic heap layout (`nsc->decode = 0xFF414141FF414141`). Version 3.23.0 fixes the vulnerability.
CVSS 8.8
CVE-2026-26986 WRITEUP HIGH
FreeRDP < 3.23.0 - Use-After-Free in xf_rail_window_common
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, `rail_window_free` dereferences a freed `xfAppWindow` pointer during `HashTable_Free` cleanup because `xf_rail_window_common` calls `free(appWindow)` on title allocation failure without first removing the entry from the `railWindows` hash table, leaving a dangling pointer that is freed again on disconnect. Version 3.23.0 fixes the vulnerability.
CVSS 7.5
CVE-2026-27015 WRITEUP MEDIUM
FreeRDP < 3.23.0 - Denial of Service via Smartcard Read Size Alignment Bounds Check
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a missing bounds check in `smartcard_unpack_read_size_align()` (`libfreerdp/utils/smartcard_pack.c:1703`) allows a malicious RDP server to crash the FreeRDP client via a reachable `WINPR_ASSERT` → `abort()`. The crash occurs in upstream builds where `WITH_VERBOSE_WINPR_ASSERT=ON` (default in FreeRDP 3.22.0 / current WinPR CMake defaults). Smartcard redirection must be explicitly enabled by the user (e.g., `xfreerdp /smartcard`; `/smartcard-logon` implies `/smartcard`). Version 3.23.0 fixes the issue.
CVSS 6.5
CVE-2026-27148 WRITEUP CRITICAL
Storybook <7.6.23/8.6.17/9.1.19/10.2.10 - WebSocket Hijacking
Storybook is a frontend workshop for building user interface components and pages in isolation. Prior to versions 7.6.23, 8.6.17, 9.1.19, and 10.2.10, the WebSocket functionality in Storybook's dev server, used to create and update stories, is vulnerable to WebSocket hijacking. This vulnerability only affects the Storybook dev server; production builds are not impacted. Exploitation requires a developer to visit a malicious website while their local Storybook dev server is running. Because the WebSocket connection does not validate the origin of incoming connections, a malicious site can silently send WebSocket messages to the local instance without any further user interaction. If the Storybook dev server is intentionally exposed publicly (e.g. for design reviews or stakeholder demos) the risk is higher, as no malicious site visit is required. Any unauthenticated attacker can send WebSocket messages to it directly. The vulnerability affects the WebSocket message handlers for creating and saving stories. Both are vulnerable to injection via unsanitized input in the componentFilePath field, which can be exploited to achieve persistent XSS or Remote Code Execution (RCE). Versions 7.6.23, 8.6.17, 9.1.19, and 10.2.10 contain a fix for the issue.
CVSS 9.6
CVE-2026-27616 WRITEUP HIGH
Vikunja < 2.0.0 - Stored Cross-Site Scripting via SVG Task Attachment
Vikunja is an open-source self-hosted task management platform. Prior to version 2.0.0, the application allows users to upload SVG files as task attachments. SVG is an XML-based format that supports JavaScript execution through elements such as <script> tags or event handlers like onload. The application does not sanitize SVG content before storing it. When the uploaded SVG file is accessed via its direct URL, it is rendered inline in the browser under the application's origin. As a result, embedded JavaScript executes in the context of the authenticated user. Because the authentication token is stored in localStorage, it is accessible via JavaScript and can be retrieved by a malicious payload. Version 2.0.0 patches this issue.
CVSS 7.3
CVE-2026-27705 WRITEUP MEDIUM
Plane <1.2.2 - Privilege Escalation
Plane is an an open-source project management tool. Prior to version 1.2.2, the `ProjectAssetEndpoint.patch()` method in `apps/api/plane/app/views/asset/v2.py` (lines 579–593) performs a global asset lookup using only the asset ID (`pk`) via `FileAsset.objects.get(id=pk)`, without verifying that the asset belongs to the workspace and project specified in the URL path. This allows any authenticated user (including those with the GUEST role) to modify the `attributes` and `is_uploaded` status of assets belonging to any workspace or project in the entire Plane instance by guessing or enumerating asset UUIDs. Version 1.2.2 fixes the issue.
CVSS 6.5
CVE-2026-27728 WRITEUP CRITICAL
OneUptime <10.0.7 - Command Injection
OneUptime is a solution for monitoring and managing online services. Prior to version 10.0.7, an OS command injection vulnerability in `NetworkPathMonitor.performTraceroute()` allows any authenticated project user to execute arbitrary operating system commands on the Probe server by injecting shell metacharacters into a monitor's destination field. Version 10.0.7 fixes the vulnerability.
CVSS 9.9
CVE-2026-27736 WRITEUP MEDIUM
BigBlueButton 3.x <3.0.20 - Open Redirect
BigBlueButton is an open-source virtual classroom. In versions on the 3.x branch prior to 3.0.20, the string received with errorRedirectUrl lacks validation, using it directly in the respondWithRedirect function leads to an Open Redirect vulnerability. BigBlueButton 3.0.20 patches the issue. No known workarounds are available.
CVSS 6.1
CVE-2026-27738 WRITEUP MEDIUM
Angular SSR <19.2.21/20.3.17/21.1.5 - Open Redirect
The Angular SSR is a server-rise rendering tool for Angular applications. An Open Redirect vulnerability exists in the internal URL processing logic in versions on the 19.x branch prior to 19.2.21, the 20.x branch prior to 20.3.17, and the 21.x branch prior to 21.1.5 and 21.2.0-rc.1. The logic normalizes URL segments by stripping leading slashes; however, it only removes a single leading slash. When an Angular SSR application is deployed behind a proxy that passes the `X-Forwarded-Prefix` header, an attacker can provide a value starting with three slashes. This vulnerability allows attackers to conduct large-scale phishing and SEO hijacking. In order to be vulnerable, the application must use Angular SSR, the application must have routes that perform internal redirects, the infrastructure (Reverse Proxy/CDN) must pass the `X-Forwarded-Prefix` header to the SSR process without sanitization, and the cache must not vary on the `X-Forwarded-Prefix` header. Versions 21.2.0-rc.1, 21.1.5, 20.3.17, and 19.2.21 contain a patch. Until the patch is applied, developers should sanitize the `X-Forwarded-Prefix` header in their`server.ts` before the Angular engine processes the request.
CVE-2026-27794 WRITEUP MEDIUM
LangGraph Checkpoint <4.0.0 - Deserialization
LangGraph Checkpoint defines the base interface for LangGraph checkpointers. Prior to version 4.0.0, a Remote Code Execution vulnerability exists in LangGraph's caching layer when applications enable cache backends that inherit from `BaseCache` and opt nodes into caching via `CachePolicy`. Prior to `langgraph-checkpoint` 4.0.0, `BaseCache` defaults to `JsonPlusSerializer(pickle_fallback=True)`. When msgpack serialization fails, cached values can be deserialized via `pickle.loads(...)`. Caching is not enabled by default. Applications are affected only when the application explicitly enables a cache backend (for example by passing `cache=...` to `StateGraph.compile(...)` or otherwise configuring a `BaseCache` implementation), one or more nodes opt into caching via `CachePolicy`, and the attacker can write to the cache backend (for example a network-accessible Redis instance with weak/no auth, shared cache infrastructure reachable by other tenants/services, or a writable SQLite cache file). An attacker must be able to write attacker-controlled bytes into the cache backend such that the LangGraph process later reads and deserializes them. This typically requires write access to a networked cache (for example a network-accessible Redis instance with weak/no auth or shared cache infrastructure reachable by other tenants/services) or write access to local cache storage (for example a writable SQLite cache file via permissive file permissions or a shared writable volume). Because exploitation requires write access to the cache storage layer, this is a post-compromise / post-access escalation vector. LangGraph Checkpoint 4.0.0 patches the issue.
CVSS 6.6
CVE-2026-27795 WRITEUP MEDIUM
langchainjs < 1.1.8 - Server-Side Request Forgery via RecursiveUrlLoader Redirect Bypass
LangChain is a framework for building LLM-powered applications. Prior to version 1.1.8, a redirect-based Server-Side Request Forgery (SSRF) bypass exists in `RecursiveUrlLoader` in `@langchain/community`. The loader validates the initial URL but allows the underlying fetch to follow redirects automatically, which permits a transition from a safe public URL to an internal or metadata endpoint without revalidation. This is a bypass of the SSRF protections introduced in 1.1.14 (CVE-2026-26019). Users should upgrade to `@langchain/community` 1.1.18, which validates every redirect hop by disabling automatic redirects and re-validating `Location` targets before following them. In this version, automatic redirects are disabled (`redirect: "manual"`), each 3xx `Location` is resolved and validated with `validateSafeUrl()` before the next request, and a maximum redirect limit prevents infinite loops.
CVSS 4.1
CVE-2026-27950 WRITEUP HIGH
FreeRDP < 3.23.0 - Use-After-Free in SDL2 Pointer Implementation
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the fix for the heap-use-after-free described in CVE-2026-24680 is incomplete. While the vulnerable execution flow referenced in the advisory exists in the SDL2 implementation, the fix appears to have been applied only to the SDL3 code path. In the SDL2 implementation, the pointer is not nulled after free. This creates a situation where the advisory suggests the vulnerability is fully resolved, while builds or environments still using SDL2 may retain the vulnerable logic. A complete fix is available in version 3.23.0.
CVSS 7.5
CVE-2026-27951 WRITEUP MEDIUM
FreeRDP < 3.23.0 - Denial of Service via Stream_EnsureCapacity
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the function `Stream_EnsureCapacity` can create an endless blocking loop. This may affect all client and server implementations using `FreeRDP`. For practical exploitation this will only work on 32bit systems where the available physical memory is `>= SIZE_MAX`. Version 3.23.0 contains a patch. No known workarounds are available.
CVSS 5.3
CVE-2026-3189 WRITEUP LOW
feiyuchuixue sz-boot-parent <=1.3.2-beta - SSRF
A weakness has been identified in feiyuchuixue sz-boot-parent up to 1.3.2-beta. This vulnerability affects unknown code of the file /api/admin/common/files/download. Executing a manipulation of the argument url can lead to server-side request forgery. The attack can be executed remotely. Attacks of this nature are highly complex. It is stated that the exploitability is difficult. Upgrading to version 1.3.3-beta is able to resolve this issue. This patch is called aefaabfd7527188bfba3c8c9eee17c316d094802. Upgrading the affected component is advised. The project was informed beforehand and acted very professional: "We have added a URL protocol whitelist validation to the file download interface, allowing only http and https protocols."
CVSS 3.1
CVE-2026-3189 WRITEUP LOW
feiyuchuixue sz-boot-parent <=1.3.2-beta - SSRF
A weakness has been identified in feiyuchuixue sz-boot-parent up to 1.3.2-beta. This vulnerability affects unknown code of the file /api/admin/common/files/download. Executing a manipulation of the argument url can lead to server-side request forgery. The attack can be executed remotely. Attacks of this nature are highly complex. It is stated that the exploitability is difficult. Upgrading to version 1.3.3-beta is able to resolve this issue. This patch is called aefaabfd7527188bfba3c8c9eee17c316d094802. Upgrading the affected component is advised. The project was informed beforehand and acted very professional: "We have added a URL protocol whitelist validation to the file download interface, allowing only http and https protocols."
CVSS 3.1
CVE-2026-3189 WRITEUP LOW
feiyuchuixue sz-boot-parent <=1.3.2-beta - SSRF
A weakness has been identified in feiyuchuixue sz-boot-parent up to 1.3.2-beta. This vulnerability affects unknown code of the file /api/admin/common/files/download. Executing a manipulation of the argument url can lead to server-side request forgery. The attack can be executed remotely. Attacks of this nature are highly complex. It is stated that the exploitability is difficult. Upgrading to version 1.3.3-beta is able to resolve this issue. This patch is called aefaabfd7527188bfba3c8c9eee17c316d094802. Upgrading the affected component is advised. The project was informed beforehand and acted very professional: "We have added a URL protocol whitelist validation to the file download interface, allowing only http and https protocols."
CVSS 3.1
CVE-2026-3189 WRITEUP LOW
feiyuchuixue sz-boot-parent <=1.3.2-beta - SSRF
A weakness has been identified in feiyuchuixue sz-boot-parent up to 1.3.2-beta. This vulnerability affects unknown code of the file /api/admin/common/files/download. Executing a manipulation of the argument url can lead to server-side request forgery. The attack can be executed remotely. Attacks of this nature are highly complex. It is stated that the exploitability is difficult. Upgrading to version 1.3.3-beta is able to resolve this issue. This patch is called aefaabfd7527188bfba3c8c9eee17c316d094802. Upgrading the affected component is advised. The project was informed beforehand and acted very professional: "We have added a URL protocol whitelist validation to the file download interface, allowing only http and https protocols."
CVSS 3.1
CVE-2026-3192 WRITEUP MEDIUM
Chia Blockchain 2.1.0 - Auth Bypass
A security vulnerability has been detected in Chia Blockchain 2.1.0. This issue affects the function _authenticate of the file rpc_server_base.py of the component RPC Credential Handler. The manipulation leads to improper authentication. The attack is possible to be carried out remotely. The attack is considered to have high complexity. The exploitability is assessed as difficult. The exploit has been disclosed publicly and may be used. The vendor was informed early via email. A separate report via bugbounty was rejected with the reason "This is by design. The user is responsible for host security".
CVSS 5.6
CVE-2026-3193 WRITEUP LOW
Chia Blockchain 2.1.0 - Cross-Site Request Forgery via /send_transaction
A vulnerability was detected in Chia Blockchain 2.1.0. Impacted is an unknown function of the file /send_transaction. The manipulation results in cross-site request forgery. The attack may be performed from remote. The attack requires a high level of complexity. The exploitability is considered difficult. The exploit is now public and may be used. The vendor was informed early via email. A separate report via bugbounty was rejected with the reason "This is by design. The user is responsible for host security".
CVSS 3.1
CVE-2026-3194 WRITEUP MEDIUM
Chia Blockchain 2.1.0 - Auth Bypass
A flaw has been found in Chia Blockchain 2.1.0. The affected element is the function send_transaction/get_private_key of the component RPC Server Master Passphrase Handler. This manipulation causes missing authentication. The attack can only be executed locally. The attack's complexity is rated as high. The exploitability is described as difficult. The exploit has been published and may be used. The vendor was informed early via email. A separate report via bugbounty was rejected with the reason "This is by design. The user is responsible for host security".
CVSS 4.5
CVE-2026-3200 WRITEUP HIGH
z-9527 admin 1.0/2.0 - SQL Injection
A vulnerability was identified in z-9527 admin 1.0/2.0. The affected element is the function checkName/register/login/getUser/getUsers of the file /server/controller/user.js. The manipulation leads to sql injection. The attack can be initiated remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
CVSS 7.3
CVE-2026-3200 WRITEUP HIGH
z-9527 admin 1.0/2.0 - SQL Injection
A vulnerability was identified in z-9527 admin 1.0/2.0. The affected element is the function checkName/register/login/getUser/getUsers of the file /server/controller/user.js. The manipulation leads to sql injection. The attack can be initiated remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
CVSS 7.3
CVE-2025-1242 WRITEUP CRITICAL
Gardyn Home Kit - Use of Hard-coded Credentials
The administrative credentials can be extracted through application API responses, mobile application reverse engineering, and device firmware reverse engineering. The exposure may result in an attacker gaining full administrative access to the Gardyn IoT Hub exposing connected devices to malicious control.
CVSS 9.1
CVE-2025-50180 WRITEUP HIGH
esm.sh 136 - Full-Response Server-Side Request Forgery
esm.sh is a no-build content delivery network (CDN) for web development. In version 136, esm.sh is vulnerable to a full-response SSRF, allowing an attacker to retrieve information from internal websites through the vulnerability. Version 137 fixes the vulnerability.
CVSS 7.5