CVE-2026-95811

A flaw was found in lemonldap-ng. The request handler evaluates security rules against raw, unnormalized web addresses while the underlying web server processes decoded and normalized paths. An authenticated attacker can exploit this discrepancy by submitting specially crafted requests containing...

CVE-2026-92289

A flaw was found in lemonldap-ng. When configured to accept either client secrets or Proof Key for Code Exchange PKCE, a security mechanism designed to protect authorization codes, the portal fails to validate client credentials properly for public clients. A remote attacker who intercepts an...

CVE-2026-92288

A flaw was found in lemonldap-ng. The OAuth 2.0 Open Authorization token introspection endpoint fails to properly verify client credentials when handling requests for public relying parties. A remote attacker possessing an access token and a public client identifier can exploit this vulnerability...

DEBIAN-CVE-2026-95811

Lemonldap::NG::Handler versions from 2.0.0 before 2.16.10, from 2.17.0 before 2.21.6, from 2.22.0 before 2.23.4 for Perl allow an equivalent spelling of a path to bypass the locationRules that restrict it. The handler matches each vhost's locationRules regular expressions against REQUESTURI, the...

CVE-2026-95811

Lemonldap::NG::Handler versions from 2.0.0 before 2.16.10, from 2.17.0 before 2.21.6, from 2.22.0 before 2.23.4 for Perl allow an equivalent spelling of a path to bypass the locationRules that restrict it. The handler matches each vhost's locationRules regular expressions against REQUESTURI, the...

CVE-2026-95811

The Lemonldap::NG::Handler for Perl is vulnerable in versions 2.0.0 before 2.16.10 , 2.17.0 before 2.21.6 , and 2.22.0 before 2.23.4 . The root cause is a discrepancy between how the handler matches locationRules regular expressions against the raw REQUEST_URI and how the web server routes paths ...

EUVD-2026-86497

Lemonldap::NG::Handler versions from 2.0.0 before 2.16.10, from 2.17.0 before 2.21.6, from 2.22.0 before 2.23.4 for Perl allow an equivalent spelling of a path to bypass the locationRules that restrict it. The handler matches each vhost's locationRules regular expressions against REQUESTURI, the...

CVE-2026-92288

Lemonldap::NG::Portal versions from 2.20.0 before 2.21.6, from 2.22.0 before 2.23.4 for Perl allow unauthenticated OAuth2 token introspection because checkEndPointAuthenticationCredentials does not verify the client secret of a public Relying Party. checkEndPointAuthenticationCredentials skips th...

CVE-2026-92289

Lemonldap::NG::Portal versions from 2.23.0 before 2.23.4 for Perl allow a PKCE bypass for public Relying Parties in "PKCE or secret" mode because checkEndPointAuthenticationCredentials does not verify the client secret. With oidcRPMetaDataOptionsRequirePKCE set to 2, the authorization endpoint...

DEBIAN-CVE-2026-92288

Lemonldap::NG::Portal versions from 2.20.0 before 2.21.6, from 2.22.0 before 2.23.4 for Perl allow unauthenticated OAuth2 token introspection because checkEndPointAuthenticationCredentials does not verify the client secret of a public Relying Party. checkEndPointAuthenticationCredentials skips th...

DEBIAN-CVE-2026-92289

Lemonldap::NG::Portal versions from 2.23.0 before 2.23.4 for Perl allow a PKCE bypass for public Relying Parties in "PKCE or secret" mode because checkEndPointAuthenticationCredentials does not verify the client secret. With oidcRPMetaDataOptionsRequirePKCE set to 2, the authorization endpoint...

CVE-2026-92289

Lemonldap::NG::Portal versions from 2.23.0 before 2.23.4 for Perl are vulnerable to a PKCE bypass for public Relying Parties when in "PKCE or secret" mode. The root cause is that the checkEndPointAuthenticationCredentials function fails to verify the client secret for public Relying Parties, allo...

EUVD-2026-86489

Lemonldap::NG::Portal versions from 2.23.0 before 2.23.4 for Perl allow a PKCE bypass for public Relying Parties in "PKCE or secret" mode because checkEndPointAuthenticationCredentials does not verify the client secret. With oidcRPMetaDataOptionsRequirePKCE set to 2, the authorization endpoint...

CVE-2026-92289

Lemonldap::NG::Portal versions from 2.23.0 before 2.23.4 for Perl allow a PKCE bypass for public Relying Parties in "PKCE or secret" mode because checkEndPointAuthenticationCredentials does not verify the client secret. With oidcRPMetaDataOptionsRequirePKCE set to 2, the authorization endpoint...

CVE-2026-92288

The Lemonldap::NG::Portal component for Perl is vulnerable in versions 2.20.0 before 2.21.6 and 2.22.0 before 2.23.4 . The root cause is that the checkEndPointAuthenticationCredentials function fails to verify the client secret for Relying Parties marked as public , while still allowing the reque...

CVE-2026-92288

Lemonldap::NG::Portal versions from 2.20.0 before 2.21.6, from 2.22.0 before 2.23.4 for Perl allow unauthenticated OAuth2 token introspection because checkEndPointAuthenticationCredentials does not verify the client secret of a public Relying Party. checkEndPointAuthenticationCredentials skips th...

EUVD-2026-86487

Lemonldap::NG::Portal versions from 2.20.0 before 2.21.6, from 2.22.0 before 2.23.4 for Perl allow unauthenticated OAuth2 token introspection because checkEndPointAuthenticationCredentials does not verify the client secret of a public Relying Party. checkEndPointAuthenticationCredentials skips th...

[SECURITY] [DLA 4734-1] lemonldap-ng security update

------------------------------------------------------------------------- Debian LTS Advisory DLA-4734-1 [email protected] https://www.debian.org/lts/security/ Xavier Guimard August 12, 2026 https://wiki.debian.org/LTS -...

[SECURITY] Fedora 43 Update: lemonldap-ng-2.23.3-1.fc43

LemonLdap::NG is a modular Web-SSO based on Apache::Session modules. It simplifies the build of a protected area with a few changes in the application. It manages both authentication and authorization and provides headers for accounting. So you can have a full AAA protection for your web space as...

[SECURITY] Fedora 44 Update: lemonldap-ng-2.23.3-1.fc44

LemonLdap::NG is a modular Web-SSO based on Apache::Session modules. It simplifies the build of a protected area with a few changes in the application. It manages both authentication and authorization and provides headers for accounting. So you can have a full AAA protection for your web space as...