CVE-2026-26276 json
Gogs: DOM-based XSS via milestone selection
published 2026-03-05 8 mo ago modified 2026-06-17 4 mo ago also GHSA-vgjm-2cpf-4g7c , GO-2026-4627 , EUVD-2026-9855
- cvss
- 7.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 12%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- gogs gogs 0.14.2
- govulncheck-vulndb openSUSE Leap 15.6 0.0.20260317T205859-150000.1.152.1
suse advisories SUSE-SU-2026:1042-1
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
opensuse advisories openSUSE-SU-2026:21483-1
- github.com/gogs/gogs@9001a68 commit
- github.com/gogs/gogs#8178 pull request
- github.com/gogs/gogs/releases/tag/v0.14.2 release
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 8 mo ago
Exploit prediction
0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| GitHub | 3.1 | 7.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | gogs.io/gogs | <=0.13.3 all versions |
no fix listed |
Affected products
- gogs gogs
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/gogs/gogs/pull/8178
web, issue-tracking
-
github.com
/gogs/gogs/commit/9001a68cdda7bd9c078ffd6d1c4622905ac11e5c
web
-
github.com
/gogs/gogs/security/advisories/GHSA-vgjm-2cpf-4g7c
web, vendor-advisory, advisory
-
github.com
/gogs/gogs/releases/tag/v0.14.2
web, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2026-26276
advisory
-
github.com
/gogs/gogs
package
Sources
- CVE List CVE-2026-26276
- GitHub Advisory GHSA-vgjm-2cpf-4g7c
- NVD CVE-2026-26276
- OSV GO-2026-4627
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.