CVE-2026-12804
lemonldap-ng SAML Common Domain Cookie Endpoint CDC.pm redirect
Description
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. The vendor was contacted early about this disclosure but did not respond in any way.
INFO
Published Date :
June 21, 2026, 6:30 p.m.
Last Modified :
June 21, 2026, 6:30 p.m.
Remotely Exploit :
No
Source :
VulDB
Affected Products
The following products are affected by CVE-2026-12804
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update lemonldap-ng to a version that fixes the redirect vulnerability.
- Restrict or validate the 'url' parameter in the SAML CDC endpoint.
- Implement strict input validation on redirect URLs.
- Monitor network traffic for suspicious redirection patterns.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-12804 vulnerability anywhere in the article.