CVE-2026-12804
lemonldap-ng SAML Common Domain Cookie Endpoint CDC.pm redirect
- State
- Published
- Severity
- 5.3 Medium
- Published
- Jun 21, 2026
- Updated
- Jun 22, 2026
- Reserved
- Jun 21, 2026
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. 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."
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 4.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C | VulDB |
| 3.0 | 4.3 Medium | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C | VulDB |
| 2.0 | 5.0 Medium | AV:N/AC:L/Au:N/C:N/I:P/A:N/E:POC/RL:OF/RC:C | VulDB |
Weaknesses
- CWE-601 Open Redirect
Affected Products
| Product | Versions |
|---|---|
lemonldap-ngn/a |
|
References
- VDB-372598 | lemonldap-ng SAML Common Domain Cookie Endpoint CDC.pm redirectvdb-entrytechnical-description
- VDB-372598 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
- CVE-2026-12804 | CVE Analysis and Reportthird-party-advisory
- Submit #836105 | lemonldap lemonldap-ng ca7af863ac5f60d127ba01e8661c0365be374d4b Open Redirectthird-party-advisory
- https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/work_items/3619related
- https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/merge_requests/979patch
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