
CVE catalog
CVE-2026-92289
lemonldap-ng: CVE-2026-92289
- Severity
- Critical · CVSS 9.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.54% · Oct 25, 2026
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 issues a code even when the request carries no code_challenge, and token() admits the exchange as long as a challenge was stored or an authentication method was returned for the caller. checkEndPointAuthenticationCredentials() skips the secret comparison for a Relying Party marked public and still returns the method deduced from the request, so any Basic or form credential satisfies the secret branch. validatePKCEChallenge() then passes, because neither a challenge nor a verifier is present. An attacker who intercepts an authorization code issued to a public Relying Party can exchange it for the user's access, ID and refresh tokens by replaying the client_id with an arbitrary secret, which is the attack PKCE prevents. Dynamic client registration creates every Relying Party in this mode.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | lemonldap-ng | sid | 2.23.4+ds+~0.5.5-1 | fixed |
| Debian | lemonldap-ng | forky | 2.23.4+ds+~0.5.5-1 | fixed |
| Debian | lemonldap-ng | trixie | 2.21.2+ds-1+deb13u3 | vulnerable |
| Debian | lemonldap-ng | trixie-security | 2.21.2+ds-1+deb13u4 | fixed |
| Debian | lemonldap-ng | bookworm | 2.16.1+ds-deb12u8 | not affected |
| Debian | lemonldap-ng | bookworm-security | 2.16.1+ds-deb12u10 | not affected |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | lemonldap-ng | source | sid | 2.23.4+ds-1 | not yet assigned | Not reported | Not reported |
| Debian | lemonldap-ng | source | forky | 2.23.4+ds-1 | not yet assigned | Not reported | Not reported |
| Debian | lemonldap-ng | source | trixie | 2.21.2+ds-1+deb13u4 | not yet assigned | Not reported | Not reported |
| Debian | lemonldap-ng | source | bookworm | Not affected | unimportant | Not reported | Not reported |
OpenFactory catalog packages
[Debian 13 (Trixie)]
- [lemonldap-ng]Affected
Details (7)
2.21.2+ds-1+deb13u2· all · trixieAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u2· all · trixieAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.23.2+ds-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.23.2+ds-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u3· all · trixie-securityAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u3· all · trixie-security · Historical versionAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u4· all · trixie-securityFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
- [lemonldap-ng-doc]Affected
Source package: [lemonldap-ng]
Details (7)
2.21.2+ds-1+deb13u2· all · trixieAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u2· all · trixieAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.23.2+ds-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.23.2+ds-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u3· all · trixie-security · Historical versionAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u3· all · trixie-securityAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u4· all · trixie-securityFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
- [lemonldap-ng-fastcgi-server]Affected
Source package: [lemonldap-ng]
Details (7)
2.21.2+ds-1+deb13u2· all · trixieAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u2· all · trixieAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.23.2+ds-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.23.2+ds-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u3· all · trixie-security · Historical versionAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u3· all · trixie-securityAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u4· all · trixie-securityFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
- [lemonldap-ng-handler]Affected
Source package: [lemonldap-ng]
Details (7)
2.21.2+ds-1+deb13u2· all · trixieAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u2· all · trixieAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.23.2+ds-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.23.2+ds-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u3· all · trixie-securityAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u3· all · trixie-security · Historical versionAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u4· all · trixie-securityFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
- [lemonldap-ng-uwsgi-app]Affected
Source package: [lemonldap-ng]
Details (7)
2.21.2+ds-1+deb13u2· all · trixieAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u2· all · trixieAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.23.2+ds-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.23.2+ds-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u3· all · trixie-security · Historical versionAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u3· all · trixie-securityAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u4· all · trixie-securityFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
- [liblemonldap-ng-common-perl]Affected
Source package: [lemonldap-ng]
Details (7)
2.21.2+ds-1+deb13u2· all · trixieAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u2· all · trixieAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.23.2+ds-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.23.2+ds-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u3· all · trixie-security · Historical versionAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u3· all · trixie-securityAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u4· all · trixie-securityFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
- [liblemonldap-ng-handler-perl]Affected
Source package: [lemonldap-ng]
Details (7)
2.21.2+ds-1+deb13u2· all · trixieAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u2· all · trixieAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.23.2+ds-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.23.2+ds-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u3· all · trixie-security · Historical versionAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u3· all · trixie-securityAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u4· all · trixie-securityFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
- [liblemonldap-ng-manager-perl]Affected
Source package: [lemonldap-ng]
Details (7)
2.21.2+ds-1+deb13u2· all · trixieAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u2· all · trixieAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.23.2+ds-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.23.2+ds-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u3· all · trixie-securityAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u3· all · trixie-security · Historical versionAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u4· all · trixie-securityFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
- [liblemonldap-ng-portal-perl]Affected
Source package: [lemonldap-ng]
Details (7)
2.21.2+ds-1+deb13u2· all · trixieAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u2· all · trixieAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.23.2+ds-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.23.2+ds-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u3· all · trixie-securityAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u3· all · trixie-security · Historical versionAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u4· all · trixie-securityFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
Source package: [lemonldap-ng]
Details (7)
2.21.2+ds-1+deb13u2· all · trixieAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u2· all · trixieAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.23.2+ds-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.23.2+ds-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u3· all · trixie-security · Historical versionAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u3· all · trixie-securityAffected · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
2.21.2+ds-1+deb13u4· all · trixie-securityFixed · Fixed:
2.21.2+ds-1+deb13u4dsa · lemonldap-ng · debian · 13
[Debian 12 (Bookworm)]
- [lemonldap-ng]Not affected
Details (6)
2.16.1+ds-deb12u8· all · bookwormNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u8· all · bookwormNot affected
dsa · lemonldap-ng · debian · bookworm
2.21.3+ds-1~bpo12+1· all · bookworm-backportsNot affected
dsa · lemonldap-ng · debian · bookworm
2.21.3+ds-1~bpo12+1· all · bookworm-backportsNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u9· all · bookworm-securityNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u9· all · bookworm-securityNot affected
dsa · lemonldap-ng · debian · bookworm
- [lemonldap-ng-doc]Not affected
Source package: [lemonldap-ng]
Details (6)
2.16.1+ds-deb12u8· all · bookwormNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u8· all · bookwormNot affected
dsa · lemonldap-ng · debian · bookworm
2.21.3+ds-1~bpo12+1· all · bookworm-backportsNot affected
dsa · lemonldap-ng · debian · bookworm
2.21.3+ds-1~bpo12+1· all · bookworm-backportsNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u9· all · bookworm-securityNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u9· all · bookworm-securityNot affected
dsa · lemonldap-ng · debian · bookworm
- [lemonldap-ng-fastcgi-server]Not affected
Source package: [lemonldap-ng]
Details (6)
2.16.1+ds-deb12u8· all · bookwormNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u8· all · bookwormNot affected
dsa · lemonldap-ng · debian · bookworm
2.21.3+ds-1~bpo12+1· all · bookworm-backportsNot affected
dsa · lemonldap-ng · debian · bookworm
2.21.3+ds-1~bpo12+1· all · bookworm-backportsNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u9· all · bookworm-securityNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u9· all · bookworm-securityNot affected
dsa · lemonldap-ng · debian · bookworm
- [lemonldap-ng-handler]Not affected
Source package: [lemonldap-ng]
Details (6)
2.16.1+ds-deb12u8· all · bookwormNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u8· all · bookwormNot affected
dsa · lemonldap-ng · debian · bookworm
2.21.3+ds-1~bpo12+1· all · bookworm-backportsNot affected
dsa · lemonldap-ng · debian · bookworm
2.21.3+ds-1~bpo12+1· all · bookworm-backportsNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u9· all · bookworm-securityNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u9· all · bookworm-securityNot affected
dsa · lemonldap-ng · debian · bookworm
- [lemonldap-ng-uwsgi-app]Not affected
Source package: [lemonldap-ng]
Details (6)
2.16.1+ds-deb12u8· all · bookwormNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u8· all · bookwormNot affected
dsa · lemonldap-ng · debian · bookworm
2.21.3+ds-1~bpo12+1· all · bookworm-backportsNot affected
dsa · lemonldap-ng · debian · bookworm
2.21.3+ds-1~bpo12+1· all · bookworm-backportsNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u9· all · bookworm-securityNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u9· all · bookworm-securityNot affected
dsa · lemonldap-ng · debian · bookworm
- [liblemonldap-ng-common-perl]Not affected
Source package: [lemonldap-ng]
Details (6)
2.16.1+ds-deb12u8· all · bookwormNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u8· all · bookwormNot affected
dsa · lemonldap-ng · debian · bookworm
2.21.3+ds-1~bpo12+1· all · bookworm-backportsNot affected
dsa · lemonldap-ng · debian · bookworm
2.21.3+ds-1~bpo12+1· all · bookworm-backportsNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u9· all · bookworm-securityNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u9· all · bookworm-securityNot affected
dsa · lemonldap-ng · debian · bookworm
- [liblemonldap-ng-handler-perl]Not affected
Source package: [lemonldap-ng]
Details (6)
2.16.1+ds-deb12u8· all · bookwormNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u8· all · bookwormNot affected
dsa · lemonldap-ng · debian · bookworm
2.21.3+ds-1~bpo12+1· all · bookworm-backportsNot affected
dsa · lemonldap-ng · debian · bookworm
2.21.3+ds-1~bpo12+1· all · bookworm-backportsNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u9· all · bookworm-securityNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u9· all · bookworm-securityNot affected
dsa · lemonldap-ng · debian · bookworm
- [liblemonldap-ng-manager-perl]Not affected
Source package: [lemonldap-ng]
Details (6)
2.16.1+ds-deb12u8· all · bookwormNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u8· all · bookwormNot affected
dsa · lemonldap-ng · debian · bookworm
2.21.3+ds-1~bpo12+1· all · bookworm-backportsNot affected
dsa · lemonldap-ng · debian · bookworm
2.21.3+ds-1~bpo12+1· all · bookworm-backportsNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u9· all · bookworm-securityNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u9· all · bookworm-securityNot affected
dsa · lemonldap-ng · debian · bookworm
- [liblemonldap-ng-portal-perl]Not affected
Source package: [lemonldap-ng]
Details (6)
2.16.1+ds-deb12u8· all · bookwormNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u8· all · bookwormNot affected
dsa · lemonldap-ng · debian · bookworm
2.21.3+ds-1~bpo12+1· all · bookworm-backportsNot affected
dsa · lemonldap-ng · debian · bookworm
2.21.3+ds-1~bpo12+1· all · bookworm-backportsNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u9· all · bookworm-securityNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u9· all · bookworm-securityNot affected
dsa · lemonldap-ng · debian · bookworm
- [liblemonldap-ng-ssoaas-apache-client-perl]Not affected
Source package: [lemonldap-ng]
Details (6)
2.16.1+ds-deb12u8· all · bookwormNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u8· all · bookwormNot affected
dsa · lemonldap-ng · debian · bookworm
2.21.3+ds-1~bpo12+1· all · bookworm-backportsNot affected
dsa · lemonldap-ng · debian · bookworm
2.21.3+ds-1~bpo12+1· all · bookworm-backportsNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u9· all · bookworm-securityNot affected
dsa · lemonldap-ng · debian · bookworm
2.16.1+ds-deb12u9· all · bookworm-securityNot affected
dsa · lemonldap-ng · debian · bookworm
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-92289]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-92289]
- [https://security-tracker.debian.org/tracker/CVE-2026-92289]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92289.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]