CVE-2026-104632
Gitea fork workflow approval bypass through cancel and rerun
Description
Gitea Actions blocks the jobs of workflow runs from first-time fork pull request contributors until a maintainer approves the run. The rerun path only required a run to be finished and built the new attempt's jobs without considering the pending approval, so when a user with Actions write access cancelled a run that was awaiting approval and then re-ran it, the new jobs were created as waiting rather than blocked while the run still recorded that approval was required. Cancelling and re-running stale fork checks is a routine action that does not involve the approval control, so where Actions is enabled and a matching runner is registered, workflow code taken from the fork pull request head could run on the repository's runners without an explicit approval.
INFO
Published Date :
Oct. 6, 2026, 8:17 p.m.
Last Modified :
Oct. 13, 2026, 5:20 p.m.
Remotely Exploit :
Yes !
Source :
88ee5874-cf24-4952-aea0-31affedb7ff2
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Ensure workflow runs require maintainer approval for forks.
- Validate job execution status after cancellation and rerun.
- Review Gitea Actions security configurations.
- Apply Gitea updates when available.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-104632.
| URL | Resource |
|---|---|
| https://blog.gitea.com/release-of-28.0.0/ | Release Notes |
| https://github.com/go-gitea/gitea/pull/39399 | Patch |
| https://github.com/go-gitea/gitea/releases/tag/v28.0.0 | Release Notes |
| https://github.com/go-gitea/gitea/security/advisories/GHSA-pvjf-7jrm-6w9g | Mitigation Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-104632 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-104632
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-104632 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-104632 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Oct. 13, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:* versions up to (excluding) 28.0.0 Added Reference Type Gitea Limited: https://blog.gitea.com/release-of-28.0.0/ Types: Release Notes Added Reference Type Gitea Limited: https://github.com/go-gitea/gitea/pull/39399 Types: Patch Added Reference Type Gitea Limited: https://github.com/go-gitea/gitea/releases/tag/v28.0.0 Types: Release Notes Added Reference Type Gitea Limited: https://github.com/go-gitea/gitea/security/advisories/GHSA-pvjf-7jrm-6w9g Types: Mitigation, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 07, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-285 Added SSVC {'id': 'CVE-2026-104632', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-10-07T20:20:48.432483Z'} -
New CVE Received by 88ee5874-cf24-4952-aea0-31affedb7ff2
Oct. 06, 2026
Action Type Old Value New Value Added Description Gitea Actions blocks the jobs of workflow runs from first-time fork pull request contributors until a maintainer approves the run. The rerun path only required a run to be finished and built the new attempt's jobs without considering the pending approval, so when a user with Actions write access cancelled a run that was awaiting approval and then re-ran it, the new jobs were created as waiting rather than blocked while the run still recorded that approval was required. Cancelling and re-running stale fork checks is a routine action that does not involve the approval control, so where Actions is enabled and a matching runner is registered, workflow code taken from the fork pull request head could run on the repository's runners without an explicit approval. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/104xxx/CVE-2026-104632.json">CVE-2026-104632</a> Added Reference https://blog.gitea.com/release-of-28.0.0/ Added Reference https://github.com/go-gitea/gitea/pull/39399 Added Reference https://github.com/go-gitea/gitea/releases/tag/v28.0.0 Added Reference https://github.com/go-gitea/gitea/security/advisories/GHSA-pvjf-7jrm-6w9g