GHSA-F75J-4CW6-RMX4 Gitea Docker image: `REVERSE_PROXY_TRUSTED_PROXIES = *` default lets any source IP impersonate any user via `X-WEBAUTH-USER`

Summary The Gitea Docker images ship an app.ini template that hard-codes: REVERSEPROXYTRUSTEDPROXIES = The documented default for this setting, in custom/conf/app.example.ini, is 127.0.0.0/8,::1/128, i.e. only loopback is trusted. When an admin enables ENABLEREVERSEPROXYAUTHENTICATION = true to p...

GHSA-2R5C-GW76-RH3W Gitea: Incomplete SSRF Protection in Webhook and Migration Allow-list Default Filter

Summary Gitea's default SSRF allow-list MatchBuiltinExternal, used by both webhook delivery and repository migrations relies on Go's standard library net.IP.IsPrivate, which only covers RFC 1918 and RFC 4193. As a result, several IP ranges commonly used for cloud metadata services, internal...

EUVD-2026-41618

Gitea: Incomplete SSRF Protection in Webhook and Migration Allow-list Default Filter...

GHSA-RJVX-X5H2-6PX5 Gitea: API Fork Endpoint Authorization Bypass Allows Organization Members to Bypass Repository Creation Restrictions

Summary The API endpoint used to fork repositories into organizations performs a weaker authorization check than the corresponding web UI and other repository creation endpoints. When a repository is forked into an organization through the API, the endpoint only verifies that the user is an...

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...

GHSA-683J-3FF6-HH2X 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...

Gitea: Denial of Service (CPU & Memory Exhaustion) via O(N^2) String Concatenation in Debian Package Upload

Gitea's Debian package registry parser contains an unbounded decompression vulnerability in ParseControlFile. When processing an uploaded .deb file, the parser decompresses control.tar.gz and copies the entire uncompressed stream into a strings.Builder via a TeeReader, with no limit on how much...

GHSA-6HM7-3PWJ-22RM Gitea: Denial of Service (CPU & Memory Exhaustion) via O(N^2) String Concatenation in Debian Package Upload

Gitea's Debian package registry parser contains an unbounded decompression vulnerability in ParseControlFile. When processing an uploaded .deb file, the parser decompresses control.tar.gz and copies the entire uncompressed stream into a strings.Builder via a TeeReader, with no limit on how much...

Gitea: Cross-repository issue/comment attachment re-linking can expose private attachment content

Summary Gitea's issue and comment attachment update paths accept attachment UUIDs without verifying that each attachment belongs to the target issue/comment repository. If an authenticated attacker knows a victim attachment UUID, they can re-link that attachment to an attacker-controlled issue or...

GHSA-6C6R-5XR4-CR5M Gitea: Cross-repository issue/comment attachment re-linking can expose private attachment content

Summary Gitea's issue and comment attachment update paths accept attachment UUIDs without verifying that each attachment belongs to the target issue/comment repository. If an authenticated attacker knows a victim attachment UUID, they can re-link that attachment to an attacker-controlled issue or...

GHSA-X77V-Q46J-393G Gitea: Blind SSRF in OAuth2 avatar synchronization via unvalidated OIDC picture claim

Summary When oauth2client UPDATEAVATAR = true is enabled, Gitea fetches the avatar URL received from an OAuth2/OIDC provider using Go's default HTTP client. The URL comes from the user's OAuth/OIDC avatar value, commonly the OIDC picture claim. The affected code path calls http.Geturl without...

GHSA-VXV2-8J6R-PCPG Gitea: OAuth token introspection returns metadata of tokens issued to other clients (RFC 7662 section 4 violation)

Live reproduction against Gitea 1.26.1 Setup: Gitea 1.26.1 docker stack with two users admin and victim and two OAuth applications owned by different users: Client A: id=5dda747d-7fdd-4694-85ff-ce4f893ce51e owner=admin Client B: id=588f778f-4a41-4914-ae01-85d776c369db owner=victim admin runs an...

GHSA-9MQ6-MQJJ-C2C5 Gitea: Unbounded Arch package file metadata can cause resource amplification in Gitea package uploads

Summary Hello Gitea Security Team, Thank you for your continued work on Gitea. I would like to responsibly report a potential availability-impact issue that I observed in Gitea’s Arch package registry implementation. During local testing, I noticed that Gitea records non-dot regular file entries...

Gitea: Unbounded Arch package file metadata can cause resource amplification in Gitea package uploads

Summary Hello Gitea Security Team, Thank you for your continued work on Gitea. I would like to responsibly report a potential availability-impact issue that I observed in Gitea’s Arch package registry implementation. During local testing, I noticed that Gitea records non-dot regular file entries...

GHSA-RGV6-XP99-6MGJ Gitea Remember-Me Token Theft Not Invalidating Attacker Session

The vulnerability is in the Remember-Me giteaincredible token validation logic, specifically when handling a compromised token hash mismatch. The vulnerable function is this one: https://github.com/go-gitea/gitea/blob/689ace1ce28fd74244b8aa335d9928cdbf6b22f9/services/auth/authtoken.goL33-L64...

Gitea: Release attachment extension allowlist bypass via web release edit form (variant of CVE-2025-68939)

Summary The web handler EditReleasePost routers/web/repo/release.go reads form fields with prefix attachment-edit-uuid into a mapuuidnewName, passes that map to releaseservice.UpdateRelease, which writes the new name to the database via repomodel.UpdateAttachmentByUUID WITHOUT calling upload.Veri...

GHSA-25GQ-J9JX-43PG Gitea: Release attachment extension allowlist bypass via web release edit form (variant of CVE-2025-68939)

Summary The web handler EditReleasePost routers/web/repo/release.go reads form fields with prefix attachment-edit-uuid into a mapuuidnewName, passes that map to releaseservice.UpdateRelease, which writes the new name to the database via repomodel.UpdateAttachmentByUUID WITHOUT calling upload.Veri...

Gitea: Token public-only scope bypassed on Limited-visibility owners (Repository + Package categories) — residual after CVE-2026-25714 / PR #37118

Summary After PR 37118 / CVE-2026-25714 fix: Unify public-only token filtering in API queries and repo access checks, merged 2026-05-18, backport 37773 to 1.26.2 — the May 2026 unification pass for public-only token filtering, reporter Medoedus per the 1.26.2 release notes, the public-only PAT...

GHSA-7P4H-3GXQ-X3H3 Gitea: Token public-only scope bypassed on Limited-visibility owners (Repository + Package categories) — residual after CVE-2026-25714 / PR #37118

Summary After PR 37118 / CVE-2026-25714 fix: Unify public-only token filtering in API queries and repo access checks, merged 2026-05-18, backport 37773 to 1.26.2 — the May 2026 unification pass for public-only token filtering, reporter Medoedus per the 1.26.2 release notes, the public-only PAT...

GHSA-W5PG-649R-P6GG Gitea: Branch Protection Bypass via PR Retargeting Preserves Stale `official` Approval Flag

Summary Gitea does not re-evaluate the official flag on existing pull request reviews when a PR's target branch is changed. An attacker with write access to a repository can obtain an official: true approval on a PR targeting an unprotected branch, then retarget the PR to a protected branch e.g.,...