Duplicate Advisory: Unauthenticated Endpoint Allows Cancellation of Any User's Active Test Webhook

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-33q9-f52j-gc75. This link is maintained to preserve external references. Original Description n8n before 2.28.0 and before 2.27.4 on the 2.27.x branch registers the DELETE /$restEndpoint/test-webhook/:id endpoin...

CVE-2026-65014 n8n before 2.28.0 Authentication Bypass via test-webhook

n8n before 2.28.0 and before 2.27.4 on the 2.27.x branch registers the DELETE /$restEndpoint/test-webhook/:id endpoint before authentication middleware is applied, allowing any unauthenticated network caller who knows a workflow ID to cancel that workflow's active test webhook registration. The...

EUVD-2026-47630

n8n before 2.28.0 and before 2.27.4 on the 2.27.x branch registers the DELETE /$restEndpoint/test-webhook/:id endpoint before authentication middleware is applied, allowing any unauthenticated network caller who knows a workflow ID to cancel that workflow's active test webhook registration. The...

CVE-2026-65014 n8n before 2.28.0 Authentication Bypass via test-webhook

n8n before 2.28.0 and before 2.27.4 on the 2.27.x branch registers the DELETE /$restEndpoint/test-webhook/:id endpoint before authentication middleware is applied, allowing any unauthenticated network caller who knows a workflow ID to cancel that workflow's active test webhook registration. The...

CVE-2026-65014

n8n prior to 2.28.0 (and 2.27.x before 2.27.4) exposes DELETE /${restEndpoint}/test-webhook/:id before authentication, enabling an unauthenticated network caller who knows a workflow ID to cancel the active test webhook registration. The impact is limited to disrupting in-progress test sessions; ...

CVE-2026-65014 n8n before 2.28.0 Authentication Bypass via test-webhook

n8n before 2.28.0 and before 2.27.4 on the 2.27.x branch registers the DELETE /$restEndpoint/test-webhook/:id endpoint before authentication middleware is applied, allowing any unauthenticated network caller who knows a workflow ID to cancel that workflow's active test webhook registration. The...

PT-2026-63446

Name of the Vulnerable Software and Affected Versions Cal.com OSS affected versions not specified Description An authorization flaw exists during the creation of webhooks. An authenticated user can perform an unvalidated injection of the teamId variable to create a webhook for any team. This allo...

PT-2026-63344

n8n before 2.28.0 and before 2.27.4 on the 2.27.x branch registers the DELETE /$restEndpoint/test-webhook/:id endpoint before authentication middleware is applied, allowing any unauthenticated network caller who knows a workflow ID to cancel that workflow's active test webhook registration. 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...

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-66M4-5JJR-2RG5 Gitea: Webhooks created by a collaborator keep firing after their repo access is revoked → ongoing real-time exfiltration of private repo content

Affected product Gitea — services/repository/collaboration.go DeleteCollaboration + webhook delivery Summary When a collaborator with admin permission on a private repo creates a webhook, that webhook keeps firing after the collaborator's access is revoked. Gitea's revocation cleanup...

Gitea: Webhooks created by a collaborator keep firing after their repo access is revoked → ongoing real-time exfiltration of private repo content

Affected product Gitea — services/repository/collaboration.go DeleteCollaboration + webhook delivery Summary When a collaborator with admin permission on a private repo creates a webhook, that webhook keeps firing after the collaborator's access is revoked. Gitea's revocation cleanup...

EUVD-2026-46123

Grav CMS scheduler-webhook plugin contains an authentication bypass vulnerability that allows unauthenticated remote attackers to trigger configured scheduled jobs by exploiting a short-circuit logic flaw in the webhook token validation. Attackers can send a single unauthenticated POST request to...

PT-2026-63306

Name of the Vulnerable Software and Affected Versions Gitea version 1.25.4 Description A flaw exists where webhooks created by a collaborator with admin permissions on a private repository continue to trigger after the collaborator's access has been revoked. The DeleteCollaboration function in...

Gitea: Webhooks created by a collaborator keep firing after their repo access is revoked → ongoing real-time exfiltration of private repo content

When a collaborator with admin permission on a private repo creates a webhook, that webhook keeps firing after the collaborator's access is revoked. Gitea's revocation cleanup DeleteCollaboration removes the collaboration record, recalculates accesses, drops watches, and unassigns issues — but it...

PT-2026-63313

Name of the Vulnerable Software and Affected Versions Gitea affected versions not specified Description The ToHook function in services/webhook/general.go decrypts the HeaderAuthorizationEncrypted field and returns the plaintext authorization header in the API response. This allows repository...

PT-2026-63303

Name of the Vulnerable Software and Affected Versions Gitea affected versions not specified Description Gitea contains an issue where the post-receive git hook handler incorrectly processes git push options on existing repositories. Users with owner or admin-collaborator access can use the...

PT-2026-63290

This update for govulncheck-vulndb fixes the following issues: - Update to version 0.0.20260723T184607 2026-07-23T18:46:07Z jscPED-11136. Go CVE Numbering Authority IDs added or updated with aliases: GO-2026-4730 CVE-2026-33022 GHSA-cv4x-93xx-wgfj GO-2026-4761 CVE-2026-33211 GHSA-j5q5-j9gm-2w5c...