CVE-2026-59102 Forgejo < 15.0.3 - Stored XSS via Actions Run Full Name Rendering
Authenticated attackers can execute arbitrary JavaScript in other users' browsers via stored XSS in Actions run full names when specific display options are enabled.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-59102?
CVE-2026-59102 is a low-severity cross-site scripting vulnerability in forgejo, published on 2 Jul 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
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.
Weakness: CWE-79
Which versions are affected by CVE-2026-59102?
How do I fix CVE-2026-59102?
No fix has been published for CVE-2026-59102 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-59102 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-59102 exists.
Sources
Also known as GHSA-r26p-rw8p-x468.