XSS in Gogs
CVE-2026-26276
Gogs is an open source self-hosted Git service. Prior to version 0.14.2, an attacker can store an HTML/JavaScript payload in a repository’s Milestone name, and when another user selects that Milestone on the New Issue page (/issues/new), a DOM-Based XSS is triggered. This issue has been patched in version 0.14.2.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (24.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 24.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.002
Affected products
- Gogs — versions < 0.14.2
Weakness classification (CWE)
References
- github.com/gogs/gogs/security/advisories/GHSA-vgjm-2cpf-4g7c (Vendor Advisory)
- github.com/gogs/gogs/pull/8178 (Issue Tracking)
- github.com/gogs/gogs/releases/tag/v0.14.2 (Release Notes)
Frequently asked questions
- What is CVE-2026-26276?
- CVE-2026-26276 is a high-severity vulnerability in Gogs, classified under Cross-site Scripting. CVSS score: 7.3/10. Published 2026-03-05.
- How severe is CVE-2026-26276?
- High severity. CVSS v3 base score is 7.3 out of 10.