Frédéric Guillot

25 exploits Active since Feb 2019
CVE-2023-32685 WRITEUP MEDIUM WRITEUP
Kanboard < 1.2.29 - Cross-Site Scripting via Malicious Clipboard Content
Kanboard is project management software that focuses on the Kanban methodology. Due to improper handling of elements under the `contentEditable` element, maliciously crafted clipboard content can inject arbitrary HTML tags into the DOM. A low-privileged attacker with permission to attach a document on a vulnerable Kanboard instance can trick the victim into pasting malicious screenshot data and achieve cross-site scripting if CSP is improperly configured. This issue has been patched in version 1.2.29.
CVSS 4.4
CVE-2025-46825 WRITEUP MEDIUM WRITEUP
Kanboard 1.2.26-1.2.44 - Stored Cross-Site Scripting via Project Creation Name Parameter
Kanboard is project management software that focuses on the Kanban methodology. Versions 1.2.26 through 1.2.44 have a Stored Cross-Site Scripting (XSS) Vulnerability in the `name` parameter of the `http://localhost/?controller=ProjectCreationController&action=create` form. This vulnerability allows attackers to inject malicious scripts into web pages viewed by other users. Note that the default content security policy (CSP) blocks the JavaScript attack, though it can be exploited if an instance is badly configured and the software is vulnerable to CSS injection because of the unsafe-inline on the default CSP. Version 1.2.45 contains a fix for the issue.
CVSS 5.4
CVE-2025-52576 WRITEUP MEDIUM WRITEUP
Kanboard < 1.2.46 - Username Enumeration and Brute-Force Protection Bypass via HTTP Header Spoofing
Kanboard is project management software that focuses on the Kanban methodology. Prior to version 1.2.46, Kanboard is vulnerable to username enumeration and IP spoofing-based brute-force protection bypass. By analyzing login behavior and abusing trusted HTTP headers, an attacker can determine valid usernames and circumvent rate-limiting or blocking mechanisms. Any organization running a publicly accessible Kanboard instance is affected, especially if relying on IP-based protections like Fail2Ban or CAPTCHA for login rate-limiting. Attackers with access to the login page can exploit this flaw to enumerate valid usernames and bypass IP-based blocking mechanisms, putting all user accounts at higher risk of brute-force or credential stuffing attacks. Version 1.2.46 contains a patch for the issue.
CVSS 5.3
CVE-2026-25924 WRITEUP HIGH WRITEUP
kanboard < 1.2.50 - Authenticated Remote Code Execution via Plugin Installer Bypass
Kanboard is project management software focused on Kanban methodology. Prior to 1.2.50, a security control bypass vulnerability in Kanboard allows an authenticated administrator to achieve full Remote Code Execution (RCE). Although the application correctly hides the plugin installation interface when the PLUGIN_INSTALLER configuration is set to false, the underlying backend endpoint fails to verify this security setting. An attacker can exploit this oversight to force the server to download and install a malicious plugin, leading to arbitrary code execution. This vulnerability is fixed in 1.2.50.
CVSS 8.4
CVE-2019-7324 WRITEUP MEDIUM WRITEUP
Kanboard < 1.2.8 - Cross-Site Scripting in Pagination Sorting
app/Core/Paginator.php in Kanboard before 1.2.8 has XSS in pagination sorting.
CVSS 6.1
CVE-2023-27592 WRITEUP MEDIUM WRITEUP
Miniflux 2.0.25-2.0.43 - Stored Cross-Site Scripting via Image Proxy Error Handling
Miniflux is a feed reader. Since v2.0.25, Miniflux will automatically proxy images served over HTTP to prevent mixed content errors. When an outbound request made by the Go HTTP client fails, the `html.ServerError` is returned unescaped without the expected Content Security Policy header added to valid responses. By creating an RSS feed item with the inline description containing an `<img>` tag with a `srcset` attribute pointing to an invalid URL like `http:a<script>alert(1)</script>`, we can coerce the proxy handler into an error condition where the invalid URL is returned unescaped and in full. This results in JavaScript execution on the Miniflux instance as soon as the user is convinced (e.g. by a message in the alt text) to open the broken image. An attacker can execute arbitrary JavaScript in the context of a victim Miniflux user when they open a broken image in a crafted RSS feed. This can be used to perform actions on the Miniflux instance as that user and gain administrative access to the Miniflux instance if it is reachable and the victim is an administrator. A patch is available in version 2.0.43. As a workaround sisable image proxy; default value is `http-only`.
CVSS 4.8
CVE-2023-32685 WRITEUP MEDIUM WRITEUP
Kanboard < 1.2.29 - Cross-Site Scripting via Malicious Clipboard Content
Kanboard is project management software that focuses on the Kanban methodology. Due to improper handling of elements under the `contentEditable` element, maliciously crafted clipboard content can inject arbitrary HTML tags into the DOM. A low-privileged attacker with permission to attach a document on a vulnerable Kanboard instance can trick the victim into pasting malicious screenshot data and achieve cross-site scripting if CSP is improperly configured. This issue has been patched in version 1.2.29.
CVSS 4.4
CVE-2023-33956 WRITEUP MEDIUM WRITEUP
Kanboard < 1.2.30 - Insecure Direct Object Reference via file_id Parameter
Kanboard is open source project management software that focuses on the Kanban methodology. Versions prior to 1.2.30 are subject to an Insecure direct object reference (IDOR) vulnerability present in the application's URL parameter. This vulnerability enables any user to read files uploaded by any other user, regardless of their privileges or restrictions. By Changing the file_id any user can render all the files where MimeType is image uploaded under **/files** directory regard less of uploaded by any user. This vulnerability poses a significant impact and severity to the application's security. By manipulating the URL parameter, an attacker can access sensitive files that should only be available to authorized users. This includes confidential documents or any other type of file stored within the application. The ability to read these files can lead to various detrimental consequences, such as unauthorized disclosure of sensitive information, privacy breaches, intellectual property theft, or exposure of trade secrets. Additionally, it could result in legal and regulatory implications, reputation damage, financial losses, and potential compromise of user trust. Users are advised to upgrade. There are no known workarounds for this vulnerability.
CVSS 4.3
CVE-2023-33968 WRITEUP MEDIUM WRITEUP
Kanboard <1.2.30 - Privilege Escalation
Kanboard is open source project management software that focuses on the Kanban methodology. Versions prior to 1.2.30 are subject to a missing access control vulnerability that allows a user with low privileges to create or transfer tasks to any project within the software, even if they have not been invited or the project is personal. The vulnerable features are `Duplicate to project` and `Move to project`, which both utilize the `checkDestinationProjectValues()` function to check his values. This issue has been addressed in version 1.2.30. Users are advised to upgrade. There are no known workarounds for this vulnerability.
CVSS 5.4
CVE-2023-33969 WRITEUP MEDIUM WRITEUP
Kanboard < 1.2.30 - Stored Cross-Site Scripting
Kanboard is open source project management software that focuses on the Kanban methodology. A stored Cross site scripting (XSS) allows an attacker to execute arbitrary Javascript and any user who views the task containing the malicious code will be exposed to the XSS attack. Note: The default CSP header configuration blocks this javascript attack. This issue has been addressed in version 1.2.30. Users are advised to upgrade. Users unable to upgrade should ensure that they have a restrictive CSP header config.
CVSS 6.4
CVE-2023-33970 WRITEUP MEDIUM WRITEUP
Kanboard < 1.2.30 - Authenticated Information Disclosure via Task and Project Title Leak
Kanboard is open source project management software that focuses on the Kanban methodology. A vulnerability related to a `missing access control` was found, which allows a User with the lowest privileges to leak all the tasks and projects titles within the software, even if they are not invited or it's a personal project. This could also lead to private/critical information being leaked if such information is in the title. This issue has been addressed in version 1.2.30. Users are advised to upgrade. There are no known workarounds for this vulnerability.
CVSS 5.4
CVE-2023-36813 WRITEUP HIGH WRITEUP
kanboard < 1.2.31 - Authenticated SQL Injection via PicoDB Library
Kanboard is project management software that focuses on the Kanban methodology. In versions prior to 1.2.31authenticated user is able to perform a SQL Injection, leading to a privilege escalation or loss of confidentiality. It appears that in some insert and update operations, the code improperly uses the PicoDB library to update/insert new information. Version 1.2.31 contains a fix for this issue.
CVSS 7.1
CVE-2024-36399 WRITEUP HIGH WRITEUP
kanboard < 1.2.37 - Improper Access Control in ProjectPermissionController
Kanboard is project management software that focuses on the Kanban methodology. The vuln is in app/Controller/ProjectPermissionController.php function addUser(). The users permission to add users to a project only get checked on the URL parameter project_id. If the user is authorized to add users to this project the request gets processed. The users permission for the POST BODY parameter project_id does not get checked again while processing. An attacker with the 'Project Manager' on a single project may take over any other project. The vulnerability is fixed in 1.2.37.
CVSS 8.2
CVE-2024-55603 WRITEUP MEDIUM WRITEUP
Kanboard < 1.2.43 - Insufficient Session Expiration in SessionHandler
Kanboard is project management software that focuses on the Kanban methodology. In affected versions sessions are still usable even though their lifetime has exceeded. Kanboard implements a cutom session handler (`app/Core/Session/SessionHandler.php`), to store the session data in a database. Therefore, when a `session_id` is given, kanboard queries the data from the `sessions` sql table. At this point, it does not correctly verify, if a given `session_id` has already exceeded its lifetime (`expires_at`). Thus, a session which's lifetime is already `> time()`, is still queried from the database and hence a valid login. The implemented **SessionHandlerInterface::gc** function, that does remove invalid sessions, is called only **with a certain probability** (_Cleans up expired sessions. Called by `session_start()`, based on `session.gc_divisor`, `session.gc_probability` and `session.gc_maxlifetime` settings_) accordingly to the php documentation. In the official Kanboard docker image these values default to: session.gc_probability=1, session.gc_divisor=1000. Thus, an expired session is only terminated with probability 1/1000. This issue has been addressed in release 1.2.43 and all users are advised to upgrade. There are no known workarounds for this vulnerability.
CVSS 6.5
CVE-2025-31483 WRITEUP MEDIUM WRITEUP
Miniflux v2 < 2.2.7 - Cross-Site Scripting via Media Proxy CSP Bypass
Miniflux is a feed reader. Due to a weak Content Security Policy on the /proxy/* route, an attacker can bypass the CSP of the media proxy and execute cross-site scripting when opening external images in a new tab/window. To mitigate the vulnerability, the CSP for the media proxy has been changed from default-src 'self' to default-src 'none'; form-action 'none'; sandbox;. This vulnerability is fixed in 2.2.7.
CVE-2025-52560 WRITEUP HIGH WRITEUP
Kanboard < 1.2.46 - Unauthenticated Password Reset Token Leak via Host Header
Kanboard is project management software that focuses on the Kanban methodology. Prior to version 1.2.46, Kanboard allows password reset emails to be sent with URLs derived from the unvalidated Host header when the application_url configuration is unset (default behavior). This allows an attacker to craft a malicious password reset link that leaks the token to an attacker-controlled domain. If a victim (including an administrator) clicks the poisoned link, their account can be taken over. This affects all users who initiate a password reset while application_url is not set. This issue has been patched in version 1.2.46.
CVSS 8.1
CVE-2025-55010 WRITEUP CRITICAL WRITEUP
Kanboard <1.2.47 - Remote Code Execution
Kanboard is project management software that focuses on the Kanban methodology. Prior to version 1.2.47, an unsafe deserialization vulnerability in the ProjectEventActvityFormatter allows admin users the ability to instantiate arbitrary php objects by modifying the event["data"] field in the project_activities table. A malicious actor can update this field to use a php gadget to write a web shell into the /plugins folder, which then gives remote code execution on the host system. This issue has been patched in version 1.2.47.
CVSS 9.1
CVE-2025-55011 WRITEUP MEDIUM WRITEUP
kanboard < 1.2.47 - Unauthenticated Path Traversal and Arbitrary File Write via TaskFile API
Kanboard is project management software that focuses on the Kanban methodology. Prior to version 1.2.47, the createTaskFile method in the API does not validate whether the task_id parameter is a valid task id, nor does it check for path traversal. As a result, a malicious actor could write a file anywhere on the system the app user controls. The impact is limited due to the filename being hashed and having no extension. This issue has been patched in version 1.2.47.
CVSS 6.4
CVE-2025-67713 WRITEUP MEDIUM WRITEUP
Miniflux < 2.2.15 - Open Redirect via Protocol-Relative URL
Miniflux 2 is an open source feed reader. Versions 2.2.14 and below treat redirect_url as safe when url.Parse(...).IsAbs() is false, enabling phishing flows after login. Protocol-relative URLs like //ikotaslabs.com have an empty scheme and pass that check, allowing post-login redirects to attacker-controlled sites. This issue is fixed in version 2.2.15.
CVSS 6.1
CVE-2026-21879 WRITEUP MEDIUM WRITEUP
kanboard < 1.2.49 - Open Redirect via URL Validation Bypass
Kanboard is project management software focused on Kanban methodology. Versions 1.2.48 and below are vulnerable to an Open Redirect attack that allows malicious actors to redirect authenticated users to attacker-controlled websites. By crafting URLs such as //evil.com, attackers can bypass the filter_var($url, FILTER_VALIDATE_URL) validation check. This vulnerability could be exploited to conduct phishing attacks, steal user credentials, or distribute malware. The issue is fixed in version 1.2.49.
CVSS 4.7
CVE-2026-21880 WRITEUP MEDIUM WRITEUP
kanboard < 1.2.49 - LDAP Injection in Authentication Mechanism
Kanboard is project management software focused on Kanban methodology. Versions 1.2.48 and below have an LDAP Injection vulnerability in the LDAP authentication mechanism. User-supplied input is directly substituted into LDAP search filters without proper sanitization, allowing attackers to enumerate all LDAP users, discover sensitive user attributes, and perform targeted attacks against specific accounts. This issue is fixed in version 1.2.49.
CVSS 5.3
CVE-2026-21881 WRITEUP CRITICAL WRITEUP
Kanboard < 1.2.49 - Unauthenticated Authentication Bypass via Spoofed HTTP Header
Kanboard is project management software focused on Kanban methodology. Versions 1.2.48 and below is vulnerable to a critical authentication bypass when REVERSE_PROXY_AUTH is enabled. The application blindly trusts HTTP headers for user authentication without verifying the request originated from a trusted reverse proxy. An attacker can impersonate any user, including administrators, by simply sending a spoofed HTTP header. This issue is fixed in version 1.2.49.
CVSS 9.1
CVE-2026-24885 WRITEUP MEDIUM WRITEUP
kanboard < 1.2.50 - Cross-Site Request Forgery via ProjectPermissionController
Kanboard is project management software focused on Kanban methodology. Prior to 1.2.50, a Cross-Site Request Forgery (CSRF) vulnerability exists in the ProjectPermissionController within the Kanboard application. The application fails to strictly enforce the application/json Content-Type for the changeUserRole action. Although the request body is JSON, the server accepts text/plain, allowing an attacker to craft a malicious form using the text/plain attribute. Which allows unauthorized modification of project user roles if an authenticated admin visits a malicious site This vulnerability is fixed in 1.2.50.
CVSS 5.7
CVE-2026-25530 WRITEUP MEDIUM WRITEUP
Kanboard < 1.2.50 - Authenticated Authorization Bypass via getSwimlane API
Kanboard is project management software focused on Kanban methodology. Prior to 1.2.50, the getSwimlane API method lacks project-level authorization, allowing authenticated users to access swimlane data from projects they cannot access. This vulnerability is fixed in 1.2.50.
CVSS 4.3
CVE-2026-25531 WRITEUP MEDIUM WRITEUP
kanboard < 1.2.50 - Authenticated Missing Authorization in Task Duplication Endpoint
Kanboard is project management software focused on Kanban methodology. Prior to 1.2.50, The fix for CVE-2023-33968 is incomplete. The TaskCreationController::duplicateProjects() endpoint does not validate user permissions for target projects, allowing authenticated users to duplicate tasks into projects they cannot access. This vulnerability is fixed in 1.2.50.
CVSS 4.3