Gitea fork workflow approval bypass through maintainer-triggered events

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-94205
StatePUBLISHED
AssignerGitea
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-06 20:17:34 UTC
Updated2026-10-13 16:41:45 UTC
DescriptionGitea Actions decided whether a fork pull request run needed approval based on the user who triggered the event rather than the pull request author. For `pull_request` activity triggered by a maintainer during ordinary triage, such as adding a label, the run was created without requiring approval, while the workflow definition was still taken from the fork head. Where Actions is enabled and a matching runner is registered, fork-controlled workflow code could run on the base repository's runners without an explicit approval.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.001480000 probability, percentile 0.034910000 (date 2026-10-07)

Problem Types: CWE-441 | CWE-863 | CWE-441 CWE-441: Unintended Proxy or Intermediary ('Confused Deputy') | CWE-863 CWE-863: Incorrect Authorization

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Gitea Gitea All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Gitea Gitea affected 1.27.3 semver Not specified

References

ReferenceSourceLinkTags
github.com/go-gitea/gitea/releases/tag/v28.0.0 88ee5874-cf24-4952-aea0-31affedb7ff2 github.com Release Notes
blog.gitea.com/release-of-28.0.0 88ee5874-cf24-4952-aea0-31affedb7ff2 blog.gitea.com Release Notes
github.com/go-gitea/gitea/pull/39399 88ee5874-cf24-4952-aea0-31affedb7ff2 github.com Patch
github.com/go-gitea/gitea/security/advisories/GHSA-xh39-mxw9-34pp 88ee5874-cf24-4952-aea0-31affedb7ff2 github.com Exploit, Mitigation, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: https://github.com/Michael-JRead (en)

CNA: https://github.com/bircni (en)

CNA: https://github.com/silverwind (en)

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