What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-02 · updated 2026-10-23
• Weakness: CWE-79

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

• Forgejo: before 15.0.3 — fixed in 15.0.3

How to fix

Upgrade to a fixed version: Forgejo 15.0.3. Check the vendor advisory for mitigations.

References

• https://codeberg.org/forgejo/forgejo/pulls/13002
• 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://www.vulncheck.com/advisories/forgejo-stored-xss-via-actions-run-full-name-rendering

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