Vulnerability · Published Aug 13, 2026 · Assigned by Gitea
CVE-2026-23603Blind SSRF in OAuth2 avatar synchronization via unvalidated OIDC picture claim
Low 3.1
In plain English
A low-severity server-side request forgery in Gitea Open Source Git Server from Gitea. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)3.1Low
Exploit odds (30 days)0.3%top 78.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Blind SSRF in OAuth2 avatar synchronization via unvalidated OIDC picture claim
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | code.gitea.io/gitea | 1.27.0 | GHSA-x77v-q46j-393g |
| Go | gitea.dev | 1.27.0 | GO-2026-6083 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Gitea | Gitea Open Source Git Server | 0 – through 1.26.4 |
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
References
- GitHub Security Advisory vendor-advisory
- Gitea v1.27.0 Release release-notes
- Gitea v1.27.0 Release Blog Post release-notes