Vulnerability · Published Jul 2, 2026 · Assigned by VulnCheck

CVE-2026-59102Forgejo < 15.0.3 - Stored XSS via Actions Run Full Name Rendering

Medium 5.4

In plain English

A medium-severity cross-site scripting in forgejo from forgejo. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).

Severity (CVSS 3.1)5.4Medium

Exploit odds (30 days)0.3%top 71.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Forgejo before 15.0.3 contains a stored cross-site scripting vulnerability that allows authenticated attackers to execute arbitrary JavaScript in other users' browsers by setting a full name containing an HTML payload and triggering an Actions run. When the DEFAULT_SHOW_FULL_NAME option is enabled, the run description is assembled server-side with the user's display name interpolated into an HTML string via a translation function that does not escape its arguments, and the frontend renders the result using a Vue v-html binding, causing script execution for any user who views the affected Actions run page.

Affected products (as reported)

Vendor	Product	Versions
forgejo	forgejo	0 – before 15.0.3

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

References

Release Notes release-notes, patch
Researcher Disclosure technical-description, exploit
Fix PR issue-tracking
https://www.vulncheck.com/advisories/forgejo-stored-xss-via-actions-run-full-name-rendering third-party-advisory