Answer in brief
CVE-2026-12804 records a Medium severity (CVSS 4.3) vulnerability in lemonldap-ng SAML Common Domain Cookie Endpoint CDC.pm redirect. The current sources do not mark it as known exploited. The current feed maps n/a/lemonldap-ng (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 4.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps n/a/lemonldap-ng (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| n/a/lemonldap-nggeneric | 2.0 || 2.1 || 2.2 || 2.3 || 2.4 || 2.5 || 2.6 || 2.7 || 2.8 || 2.9 || 2.10 || 2.11 || 2.12 || 2.13 || 2.14 || 2.15 || 2.16 || 2.17 || 2.18 || 2.19 || 2.20 || 2.21 || 2.22 || 2.23.0 | Not reported |
Published upstream
Jun 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 21, 2026
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."
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-12804 records a Medium severity (CVSS 4.3) vulnerability in lemonldap-ng SAML Common Domain Cookie Endpoint CDC.pm redirect. The current sources do not mark it as known exploited. The current feed maps n/a/lemonldap-ng (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 4.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps n/a/lemonldap-ng (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| n/a/lemonldap-nggeneric | 2.0 || 2.1 || 2.2 || 2.3 || 2.4 || 2.5 || 2.6 || 2.7 || 2.8 || 2.9 || 2.10 || 2.11 || 2.12 || 2.13 || 2.14 || 2.15 || 2.16 || 2.17 || 2.18 || 2.19 || 2.20 || 2.21 || 2.22 || 2.23.0 | Not reported |
Published upstream
Jun 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 21, 2026
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."
Quoted source text, attributed separately from HOL analysis.