CVE-2026-27771 json
Gitea Composer package source links use insufficient permission checks
published 2026-07-03 4 mo ago modified 2026-10-25 15 d ago also GHSA-8qw8-rq86-9pc2 , GO-2026-6017 , EUVD-2026-41635
- cvss
- 8.2
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.4%
- EPSS 1.4% chance of exploitation in 30 days, percentile 72%
- public exploits
- 0
- none known, plus a Nuclei check
Summary
Gitea versions up to and including 1.26.1 have insufficient permission checks for Composer package source links, which can expose private or internal package source information.
Patch / fix
- go code.gitea.io/gitea 1.26.2
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
opensuse advisories openSUSE-SU-2026:21483-1
- github.com/go-gitea/gitea#37610 pull request
- github.com/go-gitea/gitea/releases/tag/v1.26.2 release
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 4 mo ago
Exploit prediction
1.39% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Nuclei template Gitea Container Registry - Unauthorized Private Image Access nuclei detection template
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 8.2 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N |
| GitHub | 3.0 | 8.2 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | code.gitea.io/gitea | <1.26.2 |
1.26.2 |
Affected products
- Gitea Gitea Open Source Git Server
Classification
- Weakness
-
- CWE-862 Missing Authorization
References
-
github.com
/go-gitea/gitea/pull/37610
patch, web
-
github.com
/go-gitea/gitea/security/advisories/GHSA-8qw8-rq86-9pc2
vendor-advisory, web, advisory
-
github.com
/go-gitea/gitea/releases/tag/v1.26.2
release-notes, web
-
blog.gitea.com
/release-of-1.26.2/
release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2026-27771
advisory
-
blog.gitea.com
/release-of-1.26.2
web
-
github.com
/go-gitea/gitea
package
Sources
- CVE List CVE-2026-27771
- GitHub Advisory GHSA-8qw8-rq86-9pc2
- NVD CVE-2026-27771
- OSV GO-2026-6017
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.