CVE-2026-123642
Gitea pull request creation without pull request access through AGit
Description
The AGit flow (pushing to `refs/for/...`) did not check the pusher's access to pull requests again when it created the pull request. A user or deploy key with read access to the code only, or with write access to the wiki over SSH, could open pull requests in a repository where they have no access to pull requests. Creating a pull request through AGit now requires read access to the pull requests of the repository and is refused for wiki pushes.
INFO
Published Date :
Nov. 15, 2026, 10:17 p.m.
Last Modified :
Nov. 15, 2026, 10:17 p.m.
Remotely Exploit :
No
Source :
88ee5874-cf24-4952-aea0-31affedb7ff2
Solution
- Update AGit to enforce pull request access checks.
- Refuse pull requests created via wiki pushes.
- Ensure pushers have read access to pull requests.
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-2026-123642.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-123642 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-2026-123642
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-2026-123642 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-123642 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.
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New CVE Received by 88ee5874-cf24-4952-aea0-31affedb7ff2
Nov. 15, 2026
Action Type Old Value New Value Added Description The AGit flow (pushing to `refs/for/...`) did not check the pusher's access to pull requests again when it created the pull request. A user or deploy key with read access to the code only, or with write access to the wiki over SSH, could open pull requests in a repository where they have no access to pull requests. Creating a pull request through AGit now requires read access to the pull requests of the repository and is refused for wiki pushes. Added CWE CWE-862 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/123xxx/CVE-2026-123642.json">CVE-2026-123642</a> Added Reference https://blog.gitea.com/release-of-28.4.0/ Added Reference https://github.com/go-gitea/gitea/pull/40131 Added Reference https://github.com/go-gitea/gitea/pull/40281 Added Reference https://github.com/go-gitea/gitea/releases/tag/v28.4.0 Added Reference https://github.com/go-gitea/gitea/security/advisories/GHSA-9827-6wh6-634q