CVE-2026-120729
Gitea stored cross-site scripting in the issue reference popup
Description
The popup shown when hovering an issue reference loaded its data from the path of the hovered link and inserted part of the response as HTML. A user who can post a comment or other rendered content could add a link that is displayed as an ordinary issue reference but points to a file in a repository they control, so that the popup inserted that file's content into the page of anyone hovering the link and ran script in the viewer's session. The popup now requests the issue by the owner, repository and index parsed from the link.
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
- Validate and sanitize data from external links.
- Implement strict input validation for all user content.
- Avoid rendering external content directly as HTML.
- Ensure proper escaping of all displayed data.
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-2026-120729.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-120729 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-2026-120729
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-2026-120729 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-120729 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 popup shown when hovering an issue reference loaded its data from the path of the hovered link and inserted part of the response as HTML. A user who can post a comment or other rendered content could add a link that is displayed as an ordinary issue reference but points to a file in a repository they control, so that the popup inserted that file's content into the page of anyone hovering the link and ran script in the viewer's session. The popup now requests the issue by the owner, repository and index parsed from the link. Added CWE CWE-79 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/120xxx/CVE-2026-120729.json">CVE-2026-120729</a> Added Reference https://blog.gitea.com/release-of-28.4.0/ Added Reference https://github.com/go-gitea/gitea/pull/40207 Added Reference https://github.com/go-gitea/gitea/pull/40225 Added Reference https://github.com/go-gitea/gitea/releases/tag/v28.4.0 Added Reference https://github.com/go-gitea/gitea/security/advisories/GHSA-wmr3-xg9x-vc55