This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-12804 →

DEBIAN-CVE-2026-12804

A vulnerability was detected in lemonldap-ng up to 2.23.0. Impacted is an unknown function in the library lemonldap-ng-portal/lib/Lemonldap/NG/Portal/...

Original description

The description as published by the source.

A vulnerability was detected in lemonldap-ng up to 2.23.0. Impacted is an unknown function in the library lemonldap-ng-portal/lib/Lemonldap/NG/Portal/CDC.pm of the component SAML Common Domain Cookie Endpoint. Performing a manipulation of the argument url results in open redirect. The attack is possible to be carried out remotely. The exploit is now public and may be used. Applying a patch is the recommended action to fix this issue. The vendor confirms, that "it has been fixed some days ago and will be available in 2.23.1. CDC is quite never used, so the impact is very low."

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 lemonldap-ng

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.16.1+ds-deb12u9"}]}]

Debian:13 lemonldap-ng

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.21.2+ds-1+deb13u3"}]}]

References

advisory security-tracker.debian.org