GHSA-PP92-CRG2-GFV9 OAuth2::Client#request: Protocol-relative redirect Location overrides authority, leaking bearer Authorization to attacker host

Summary When an application uses OAuth2::Client typically via an OAuth2::AccessToken and the configured authorization server returns a redirect whose Location header is a protocol-relative URI of the form //attacker.example/leak, OAuth2::Clientrequest resolves the redirect with...

CVE-2026-54603 OAuth2::Client#request: Protocol-relative redirect Location overrides authority, leaking bearer Authorization to attacker host

OAuth2 is a Ruby wrapper for the OAuth 2.0 and 2.1 authorization frameworks, including OpenID Connect OIDC. From 0.4.0 to 2.0.21, a protocol-relative redirect Location returned to OAuth2::Clientrequest overrides the request authority, so the bearer Authorization header is sent to an...

CVE-2026-54605 OAuth: Cross-origin token-request redirects can expose signed request metadata

OAuth is a Ruby wrapper for the OAuth 1.0 and 1.0a protocols, providing clients and servers. From 0.5.5 to 1.1.5, OAuth::Consumertokenrequest parses the raw Location header of a 300 to 399 redirect returned by the OAuth server and follows the redirect recursively, which can mutate the consumer's...

CVE-2026-54605

Summary: CVE-2026-54605 affects the Ruby OAuth gem (versions 0.5.5–1.1.5). The flaw in OAuth::Consumer#token_request follows 300–399 redirects by parsing the raw Location header and recursing, which can mutate the gem’s site/configuration and disclose signed OAuth request metadata (including the ...

PT-2026-65616

Name of the Vulnerable Software and Affected Versions datamodel-code-generator versions prior to 0.63.0 Description When fetching remote schemas, the software re-sends original request headers to redirect targets even if the redirect changes the origin host, port, or scheme. This occurs within th...

CVE-2026-16481

A Server-Side Request Forgery SSRF and credential exfiltration vulnerability exists in the cloud-healthcare-fhir-fetch-page tool of googleapis/mcp-toolbox. The tool takes an unvalidated pageURL parameter from the client and issues an HTTP GET request to it using an authenticated client. The...

CVE-2026-16481 Server-Side Request Forgery (SSRF) and Credential Exfiltration in googleapis/mcp-toolbox cloud-healthcare-fhir-fetch-page Tool

A Server-Side Request Forgery SSRF and credential exfiltration vulnerability exists in the cloud-healthcare-fhir-fetch-page tool of googleapis/mcp-toolbox. The tool takes an unvalidated pageURL parameter from the client and issues an HTTP GET request to it using an authenticated client. The...

VulnCheck KEV: CVE-2026-59822

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. Prior to 1.84.0, LiteLLM's MCP Streamable HTTP endpoint allowed an unauthenticated attacker to use a fabricated Authorization header to trigger an OAuth2 passthrough fallback path that replaced failed LiteLLM key...

CVE-2026-66339

A flaw was found in libsoup. After a CONNECT tunnel is established through an HTTP proxy, libsoup incorrectly attaches the Proxy-Authorization header to subsequent HTTPS requests sent through that tunnel to the destination server. This allows the destination server to capture proxy credentials,...

CVE-2026-66339 Libsoup: libsoup: proxy credentials leak to destination server via proxy-authorization header in connect tunnels

A flaw was found in libsoup. After a CONNECT tunnel is established through an HTTP proxy, libsoup incorrectly attaches the Proxy-Authorization header to subsequent HTTPS requests sent through that tunnel to the destination server. This allows the destination server to capture proxy credentials,...

CVE-2026-66339

A flaw was found in libsoup. After a CONNECT tunnel is established through an HTTP proxy, libsoup incorrectly attaches the Proxy-Authorization header to subsequent HTTPS requests sent through that tunnel to the destination server. This allows the destination server to capture proxy credentials,...

NPM: electron-updater: Cross-origin redirect leaks `PRIVATE-TOKEN` and mixed-case `Authorization` credentials in `builder-util-runtime`

NPM: electron-updater: Cross-origin redirect leaks PRIVATE-TOKEN and mixed-case Authorization credentials in builder-util-runtime vulnerability discovered by ? in WordPress Npm builder-util-runtime versions 9.7.0...

electron-updater: Cross-origin redirect leaks `PRIVATE-TOKEN` and mixed-case `Authorization` credentials in `builder-util-runtime`

Summary In electron-builder's builder-util-runtime package, the HTTP redirect handler HttpExecutor.prepareRedirectUrlOptions only stripped a credential header whose key string matched exactly lowercase "authorization". Other credential-bearing headers — most notably PRIVATE-TOKEN used by GitLab's...

EUVD-2026-40455

electron-updater: Cross-origin redirect leaks PRIVATE-TOKEN and mixed-case Authorization credentials in builder-util-runtime...

GHSA-P2F4-R6V6-J797 electron-updater: Cross-origin redirect leaks `PRIVATE-TOKEN` and mixed-case `Authorization` credentials in `builder-util-runtime`

Summary In electron-builder's builder-util-runtime package, the HTTP redirect handler HttpExecutor.prepareRedirectUrlOptions only stripped a credential header whose key string matched exactly lowercase "authorization". Other credential-bearing headers — most notably PRIVATE-TOKEN used by GitLab's...

PYSEC-2026-3543 Open WebUI's API key endpoint restrictions bypassed via `x-api-key` header — full message processing on restricted endpoints

Summary Open WebUI allows admins to restrict which API endpoints an API key can access. When an API key is restricted from /api/v1/messages, requests using the Authorization: Bearer sk-... header are correctly blocked with 403. However, the same key sent via the x-api-key header bypasses the...

GHSA-3R5C-2XXX-H872 Gitea: Webhook Authorization Header Returned in Plaintext via API

Summary The ToHook function in services/webhook/general.go decrypts the webhook's HeaderAuthorizationEncrypted field and returns the plaintext authorization header in the API response. Any repository admin can read the full plaintext value of webhook authorization headers Bearer tokens, Basic aut...

Gitea: Webhook Authorization Header Returned in Plaintext via API

Summary The ToHook function in services/webhook/general.go decrypts the webhook's HeaderAuthorizationEncrypted field and returns the plaintext authorization header in the API response. Any repository admin can read the full plaintext value of webhook authorization headers Bearer tokens, Basic aut...

Gitea: Privilege Escalation via Access Token Scope Escalation in API

Gitea's API endpoint for creating Personal Access Tokens POST /users/username/tokens is protected by a middleware reqBasicOrRevProxyAuth that is intended to require password-based authentication, preventing a compromised token from being used to mint new ones. However, when a token is passed in t...

CVE-2026-12547

CVE-2026-12547 concerns Libsoup's SoupAuthManager, which caches proxy authentication credentials without scoping them to the proxy authority (host:port). When proxy settings change (e.g., system settings or WPAD), cached Proxy-Authorization headers from the previous proxy may be sent to the new p...