Hayden

14 exploits Active since Apr 2024
CVE-2026-54787 WRITEUP LOW WRITEUP
sigstore-go fails to check signature timestamps against a signing key's validity period
sigstore-go is a Go library for Sigstore signing and verification. Prior to 1.2.1, sigstore-go does not check a bundle signing timestamp against the validity window of an ExpiringKey wrapping a self-managed long-lived signing key without a certificate, which can allow an attacker holding expired key material to sign accepted bundles. This issue is fixed in version 1.2.1.
CVSS 3.1
CVE-2026-49834 WRITEUP MEDIUM WRITEUP
sigstore-go: Multi-log threshold bypass via single compromised log
sigstore-go is a Go library for Sigstore signing and verification. Prior to 1.2.0, a verifier configured with WithTransparencyLog(N>1) or WithSignedCertificateTimestamps(N>1) counts verified witnesses per entry or per validation path rather than per log authority, allowing a single compromised transparency log or CT log to satisfy multi-log threshold requirements and defeat the multi-log policy. This issue is fixed in version 1.2.0.
CVSS 5.9
CVE-2026-49835 WRITEUP MEDIUM WRITEUP
Sigstore Timestamp Authority: OOM due to unbounded metric label cardinality
Sigstore Timestamp Authority is a service for issuing RFC 3161 timestamps. Prior to 2.1.0, the global wrapMetrics middleware records raw HTTP request path r.URL.Path and raw HTTP request method r.Method as Prometheus labels for latency and request count metric vectors before routing, allowing an unauthenticated remote attacker to issue requests with random paths such as /api/v1/timestamp/<uuid> or random HTTP methods and create unbounded permanent time-series entries that exhaust memory. This issue is fixed in version 2.1.0.
CVSS 5.9
CVE-2024-31991 WRITEUP MEDIUM WRITEUP
Mealie < 1.4.0 - Authenticated Server-Side Request Forgery via safe_scrape_html Function
Mealie is a self hosted recipe manager and meal planner. Prior to 1.4.0, the safe_scrape_html function utilizes a user-controlled URL to issue a request to a remote server. Based on the content of the response, it will either parse the content or disregard it. This function, nor those that call it, add any restrictions on the URL that can be provided, nor is it restricted to being an FQDN (i.e., an IP address can be provided). As this function’s return will be handled differently by its caller depending on the response, it is possible for an attacker to use this functionality to positively identify HTTP(s) servers on the local network with any IP/port combination. This issue can result in any authenticated user being able to map HTTP servers on a local network that the Mealie service has access to. Note that by default any user can create an account on a Mealie server, and that the default [email protected] user is available with its hard-coded password. This vulnerability is fixed in 1.4.0.
CVSS 4.1
CVE-2024-31993 WRITEUP MEDIUM WRITEUP
Mealie < 1.4.0 - Server-Side Request Forgery via Recipe Image Scraping
Mealie is a self hosted recipe manager and meal planner. Prior to 1.4.0, the scrape_image function will retrieve an image based on a user-provided URL, however the provided URL is not validated to point to an external location and does not have any enforced rate limiting. The response from the Mealie server will also vary depending on whether or not the target file is an image, is not an image, or does not exist. Additionally, when a file is retrieved the file may remain stored on Mealie’s file system as original.jpg under the UUID of the recipe it was requested for. If the attacker has access to an admin account (e.g. the default [email protected]), this file can then be retrieved. Note that if Mealie is running in a development setting this could be leveraged by an attacker to retrieve any file that the Mealie server had downloaded in this fashion without the need for administrator access. This vulnerability is fixed in 1.4.0.
CVSS 6.2
CVE-2026-24122 WRITEUP LOW WRITEUP
sigstore cosign < 3.0.5 - Improper Certificate Validation
Cosign provides code signing and transparency for containers and binaries. In versions 3.0.4 and below, an issuing certificate with a validity that expires before the leaf certificate will be considered valid during verification even if the provided timestamp would mean the issuing certificate should be considered expired. When verifying artifact signatures using a certificate, Cosign first verifies the certificate chain using the leaf certificate's "not before" timestamp and later checks expiry of the leaf certificate using either a signed timestamp provided by the Rekor transparency log or from a timestamp authority, or using the current time. The root and all issuing certificates are assumed to be valid during the leaf certificate's validity. There is no impact to users of the public Sigstore infrastructure. This may affect private deployments with customized PKIs. This issue has been fixed in version 3.0.5.
CVSS 3.7
CVE-2024-31992 WRITEUP MEDIUM WRITEUP
Mealie < 1.4.0 - Denial of Service via Uncontrolled Resource Consumption in safe_scrape_html
Mealie is a self hosted recipe manager and meal planner. Prior to 1.4.0, the safe_scrape_html function utilizes a user-controlled URL to issue a request to a remote server, however these requests are not rate-limited. While there are efforts to prevent DDoS by implementing a timeout on requests, it is possible for an attacker to issue a large number of requests to the server which will be handled in batches based on the configuration of the Mealie server. The chunking of responses is helpful for mitigating memory exhaustion on the Mealie server, however a single request to an arbitrarily large external file (e.g. a Debian ISO) is often sufficient to completely saturate a CPU core assigned to the Mealie container. Without rate limiting in place, it is possible to not only sustain traffic against an external target indefinitely, but also to exhaust the CPU resources assigned to the Mealie container. This vulnerability is fixed in 1.4.0.
CVSS 6.5
CVE-2024-31994 WRITEUP MEDIUM WRITEUP
Mealie < 1.4.0 - Denial of Service via Image Request Resource Exhaustion
Mealie is a self hosted recipe manager and meal planner. Prior to 1.4.0, an attacker can point the image request to an arbitrarily large file. Mealie will attempt to retrieve this file in whole. If it can be retrieved, it may be stored on the file system in whole (leading to possible disk consumption), however the more likely scenario given resource limitations is that the container will OOM during file retrieval if the target file size is greater than the allocated memory of the container. At best this can be used to force the container to infinitely restart due to OOM (if so configured in `docker-compose.yml), or at worst this can be used to force the Mealie container to crash and remain offline. In the event that the file can be retrieved, the lack of rate limiting on this endpoint also permits an attacker to generate ongoing requests to any target of their choice, potentially contributing to an external-facing DoS attack. This vulnerability is fixed in 1.4.0.
CVSS 6.5
CVE-2025-66564 WRITEUP HIGH WRITEUP
Sigstore Timestamp Authority <2.0.3 - Info Disclosure
Sigstore Timestamp Authority is a service for issuing RFC 3161 timestamps. Prior to 2.0.3, Function api.ParseJSONRequest currently splits (via a call to strings.Split) an optionally-provided OID (which is untrusted data) on periods. Similarly, function api.getContentType splits the Content-Type header (which is also untrusted data) on an application string. As a result, in the face of a malicious request with either an excessively long OID in the payload containing many period characters or a malformed Content-Type header, a call to api.ParseJSONRequest or api.getContentType incurs allocations of O(n) bytes (where n stands for the length of the function's argument). This vulnerability is fixed in 2.0.3.
CVSS 7.5
CVE-2026-22703 WRITEUP MEDIUM WRITEUP
sigstore cosign < 2.6.2 and 3.0.4 - Insufficient Verification of Data Authenticity
Cosign provides code signing and transparency for containers and binaries. Prior to versions 2.6.2 and 3.0.4, Cosign bundle can be crafted to successfully verify an artifact even if the embedded Rekor entry does not reference the artifact's digest, signature or public key. When verifying a Rekor entry, Cosign verifies the Rekor entry signature, and also compares the artifact's digest, the user's public key from either a Fulcio certificate or provided by the user, and the artifact signature to the Rekor entry contents. Without these comparisons, Cosign would accept any response from Rekor as valid. A malicious actor that has compromised a user's identity or signing key could construct a valid Cosign bundle by including any arbitrary Rekor entry, thus preventing the user from being able to audit the signing event. This issue has been patched in versions 2.6.2 and 3.0.4.
CVSS 5.5
CVE-2026-22772 WRITEUP MEDIUM WRITEUP
Fulcio < 1.8.5 - Server-Side Request Forgery via MetaIssuer URL Validation Bypass
Fulcio is a certificate authority for issuing code signing certificates for an OpenID Connect (OIDC) identity. Prior to 1.8.5, Fulcio's metaRegex() function uses unanchored regex, allowing attackers to bypass MetaIssuer URL validation and trigger SSRF to arbitrary internal services. Since the SSRF only can trigger GET requests, the request cannot mutate state. The response from the GET request is not returned to the caller so data exfiltration is not possible. A malicious actor could attempt to probe an internal network through Blind SSRF. This vulnerability is fixed in 1.8.5.
CVSS 5.8
CVE-2026-23831 WRITEUP MEDIUM WRITEUP
Rekor <1.4.3 - Nil Pointer Dereference
Rekor is a software supply chain transparency log. In versions 1.4.3 and below, the entry implementation can panic on attacker-controlled input when canonicalizing a proposed entry with an empty spec.message, causing nil Pointer Dereference. Function validate() returns nil (success) when message is empty, leaving sign1Msg uninitialized, and Canonicalize() later dereferences v.sign1Msg.Payload. A malformed proposed entry of the cose/v0.0.1 type can cause a panic on a thread within the Rekor process. The thread is recovered so the client receives a 500 error message and service still continues, so the availability impact of this is minimal. This issue has been fixed in version 1.5.0.
CVSS 5.3
CVE-2026-24117 WRITEUP MEDIUM WRITEUP
Rekor < 1.5.0 - Server-Side Request Forgery via Public Key Retrieval Endpoint
Rekor is a software supply chain transparency log. In versions 1.4.3 and below, attackers can trigger SSRF to arbitrary internal services because /api/v1/index/retrieve supports retrieving a public key via user-provided URL. Since the SSRF only can trigger GET requests, the request cannot mutate state. The response from the GET request is not returned to the caller so data exfiltration is not possible. A malicious actor could attempt to probe an internal network through Blind SSRF. The issue has been fixed in version 1.5.0. To workaround this issue, disable the search endpoint with --enable_retrieve_api=false.
CVSS 5.3
CVE-2026-24137 WRITEUP MEDIUM WRITEUP
sigstore framework <1.10.3 - Buffer Overflow
sigstore framework is a common go library shared across sigstore services and clients. In versions 1.10.3 and below, the legacy TUF client (pkg/tuf/client.go) supports caching target files to disk. It constructs a filesystem path by joining a cache base directory with a target name sourced from signed target metadata; however, it does not validate that the resulting path stays within the cache base directory. A malicious TUF repository can trigger arbitrary file overwriting, limited to the permissions that the calling process has. Note that this should only affect clients that are directly using the TUF client in sigstore/sigstore or are using an older version of Cosign. Public Sigstore deployment users are unaffected, as TUF metadata is validated by a quorum of trusted collaborators. This issue has been fixed in version 1.10.4. As a workaround, users can disable disk caching for the legacy client by setting SIGSTORE_NO_CACHE=true in the environment, migrate to https://github.com/sigstore/sigstore-go/tree/main/pkg/tuf, or upgrade to the latest sigstore/sigstore release.
CVSS 5.8