What is CVE-2026-12804?

CVE-2026-12804 is a medium-severity vulnerability in Lemonldap-ng, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.3/10. Published 2026-06-21.

How severe is CVE-2026-12804?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Open Redirect in Lemonldap-ng

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/CDC.pm of the component SAML Common Domain Cookie Endpoint. Performing a manipulation of…

Vulnerability class: Open Redirect

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

Affected products

N/a Lemonldap-ng — versions 2.0, 2.1, 2.2

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

cna@vuldb.com (third-party-advisory)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)

Frequently asked questions

What is CVE-2026-12804?: CVE-2026-12804 is a medium-severity vulnerability in Lemonldap-ng, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.3/10. Published 2026-06-21.
How severe is CVE-2026-12804?: Medium severity. CVSS v3 base score is 4.3 out of 10.