CVE-2026-118386
Gitea Actions fork workflow trust through pull request review commit
Description
Workflows triggered by a pull request review were read from the commit named in the review's `commit_id`, while the fork restrictions were decided by the reviewed pull request, and the commit was not checked to belong to that pull request. A user with read access to a repository could place a commit of their own in it, through a fork pull request or an AGit push, and submit a review naming that commit on a pull request whose head branch is in the same repository. On instances with a runner serving the repository, the attacker's workflow then ran without approval, received the Actions secrets of the repository and its owner, and got a `GITEA_TOKEN` with write access to the repository. Review-triggered workflows now run on the pull request head.
INFO
Published Date :
Nov. 1, 2026, 10:18 a.m.
Last Modified :
Nov. 1, 2026, 10:18 a.m.
Remotely Exploit :
No
Source :
88ee5874-cf24-4952-aea0-31affedb7ff2
Affected Products
The following products are affected by CVE-2026-118386
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Configure workflows to run on pull request head.
- Validate commit ownership before triggering workflows.
- Restrict access to repository secrets.
- Apply vendor security patches promptly.
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-2026-118386.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-118386 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-2026-118386
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-2026-118386 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-118386 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.
-
New CVE Received by 88ee5874-cf24-4952-aea0-31affedb7ff2
Nov. 01, 2026
Action Type Old Value New Value Added Description Workflows triggered by a pull request review were read from the commit named in the review's `commit_id`, while the fork restrictions were decided by the reviewed pull request, and the commit was not checked to belong to that pull request. A user with read access to a repository could place a commit of their own in it, through a fork pull request or an AGit push, and submit a review naming that commit on a pull request whose head branch is in the same repository. On instances with a runner serving the repository, the attacker's workflow then ran without approval, received the Actions secrets of the repository and its owner, and got a `GITEA_TOKEN` with write access to the repository. Review-triggered workflows now run on the pull request head. Added CWE CWE-863 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/118xxx/CVE-2026-118386.json">CVE-2026-118386</a> Added Reference https://blog.gitea.com/release-of-28.3.0/ Added Reference https://github.com/go-gitea/gitea/pull/40099 Added Reference https://github.com/go-gitea/gitea/pull/40117 Added Reference https://github.com/go-gitea/gitea/releases/tag/v28.3.0 Added Reference https://github.com/go-gitea/gitea/security/advisories/GHSA-32h8-5xqg-h466