Vulnerability advisory

CVE-2026-23603

Blind SSRF in OAuth2 avatar synchronization via unvalidated OIDC picture claim

Published Aug 13, 2026Updated Oct 28, 2026OSV record ↗

Severity

Affected versions

Affected commits	Fixed by commit
GIT github.com/go-gitea/gitea ↗
All commits before 73e0e442988704487b285d59f7494a85229e41e2	`73e0e442988704487b285d59f7494a85229e41e2`
Also listed as affected (38) `v1.26.0-dev` `v1.25.0-dev` `v1.24.0-dev` `v1.22.0-rc1` `v1.23.0-dev` `v1.22.0-rc0` `v1.21.0-rc0` `v1.22.0-dev` `v1.20.0-rc0` `v1.21.0-dev` `v1.20.0-dev` `v1.19.0-rc0` `v1.18.0-rc0` `v1.19.0-dev` `v1.18.0-dev` `v1.17.0-dev` `v1.16.0-rc1` `v1.15.0-rc1` `v1.16.0-dev` `v1.15.0-dev` `v1.14.0-dev` `v1.13.0-dev` `v1.12.0-dev` `v1.10.5` `v1.11.0-rc1` `v1.10.0-rc1` `v1.11.0-dev` `v1.9.0-rc1` `v1.10.0-dev` `v1.9.0-dev` `v1.7.0-dev` `v1.6.0-rc1` `v1.6.0-dev` `v1.5.0-rc1` `v1.5.0-dev` `v1.1.0` `v1.0.0` `v0.9.99`

Blind SSRF in OAuth2 avatar synchronization via unvalidated OIDC picture claim