NIXPKGS-2026-0843
GitHub issue
published on 31 Mar 2026
by @mweinelt Activity log
- Created automatic suggestion
- @mweinelt accepted
- @mweinelt published on GitHub
OpenBao has Reflected XSS in its OIDC authentication error message
OpenBao is an open source identity-based secrets management system. Prior to version 2.5.2, OpenBao installations that have an OIDC/JWT authentication method enabled and a role with `callback_mode=direct` configured are vulnerable to XSS via the `error_description` parameter on the page for a failed authentication. This allows an attacker access to the token used in the Web UI by a victim. The `error_description` parameter has been replaced with a static error message in v2.5.2. The vulnerability can be mitigated by removing any roles with `callback_mode` set to `direct`.
References
- https://github.com/openbao/openbao/security/advisories/GHSA-cpj3-3r2f-xj59 x_refsource_CONFIRM
- https://github.com/openbao/openbao/pull/2709 x_refsource_MISC
- https://github.com/openbao/openbao/commit/6e2b2dd84f0e47cebc90d6e79609dd5274732662 x_refsource_MISC
- https://github.com/openbao/openbao/releases/tag/v2.5.2 x_refsource_MISC
Affected products
openbao
- ==< 2.5.2
Package maintainers
-
@emilylange Emily Lange <nix@emilylange.de>
-
@brianmay Brian May <brian@linuxpenguins.xyz>