CVE-2026-23603

Aliases:GHSA-x77v-q46j-393gGO-2026-6083
Advisory lineage Upstream: 0 Downstream: 3
Deferred
Published: 13 Aug 2026, 16:44
Last modified:14 Aug 2026, 17:45

Vulnerability Summary

Overall Risk (default)
low
12/100
CVSS Score
3.1 LOW
v3.1 (cve.org)
EPSS Score
0.25% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

13 Aug 2026, 16:44
Published
Vulnerability first disclosed
14 Aug 2026, 17:45
Last Modified
Vulnerability information updated

Description

Blind SSRF in OAuth2 avatar synchronization via unvalidated OIDC picture claim

CVSS Metrics

  • v3.1•LOW•Score: 3.1CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS Trends

Current EPSS score: 0.25%• Percentile: 16%

Techniques & Countermeasures

  • CWE-918•Server-Side Request Forgery (SSRF)

    The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

Affected Systems

  • gitea•gitea open source git server

    ≤ 1.26.4

  • code.gitea.io•gitea

    < 1.27.0

  • Go•gitea.dev

    < 1.27.0

References (8)