CVE-2026-20800 json
Notification API Leaks Private Repository Issue Titles After Collaborator Permission Revocation
published 2026-01-22 9 mo ago modified 2026-09-08 2 mo ago also BIT-gitea-2026-20800 , EUVD-2026-4268 , GHSA-2vgv-hgv4-22mh , GHSA-g54m-9f6g-wj7q , GO-2026-4362
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 35%
- public exploits
- 0
- none known
Summary
Gitea's notification API does not re-validate repository access permissions when returning notification details. After a user's access to a private repository is revoked, they may still view issue and pull request titles through previously received notifications.
Patch / fix
- go github.com/go-gitea/gitea 1.25.4
- bitnami gitea 1.25.4
- go code.gitea.io/gitea 1.25.4
- gitea gitea 1.25.4
- govulncheck-vulndb openSUSE Leap 15.6 0.0.20260205T172317-150000.1.146.1
suse advisories SUSE-SU-2026:0403-1
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
opensuse advisories openSUSE-SU-2026:21483-1
- github.com/go-gitea/gitea@67e75f3 commit
- github.com/go-gitea/gitea#36339 pull request
- github.com/go-gitea/gitea/releases/tag/v1.25.4 release
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 9 mo ago
Exploit prediction
0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| OSV | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/go-gitea/gitea | <1.25.4 |
1.25.4 |
| bitnami | gitea | <1.25.4 |
1.25.4 |
| go | code.gitea.io/gitea | <1.25.4 |
1.25.4 |
Affected products
- Gitea Gitea Open Source Git Server
Classification
- Weakness
-
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
References
-
github.com
/go-gitea/gitea/pull/36339
patch, web, issue-tracking
-
github.com
/go-gitea/gitea/commit/67e75f30a83d2523cedc37ad7b03bcba66947833
web
-
github.com
/go-gitea/gitea/security/advisories/GHSA-g54m-9f6g-wj7q
vendor-advisory, broken-link, web
-
github.com
/go-gitea/gitea/releases/tag/v1.25.4
release-notes, web, article
-
blog.gitea.com
/release-of-1.25.4/
release-notes, article
-
nvd.nist.gov
/vuln/detail/CVE-2026-20800
advisory, web
-
blog.gitea.com
/release-of-1.25.4
web
-
github.com
/go-gitea/gitea
package
-
github.com
/advisories/GHSA-2vgv-hgv4-22mh
advisory
Sources
- CVE List CVE-2026-20800
- GitHub Advisory GHSA-2vgv-hgv4-22mh
- NVD CVE-2026-20800
- OSV BIT-gitea-2026-20800
- OSV GO-2026-4362
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.