Description
A Server-Side Request Forgery issue in the OpenID Connect Issuer in LemonLDAP::NG before 2.17.1 allows authenticated remote attackers to send GET requests to arbitrary URLs through the request_uri authorization parameter. This is similar to CVE-2020-10770.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | lemonldap-ng | 2.17.1+ds-1 | — |
| Debian 13 | lemonldap-ng | 2.17.1+ds-1 | — |
| Debian 12 | lemonldap-ng | 2.16.1+ds-deb12u2 | — |
| Debian 10 | lemonldap-ng | 2.0.2+ds-7+deb10u10 | DLA-3612-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | lemonldap-ng | No fix yet | — |
| Ubuntu 22.04 LTS | lemonldap-ng | No fix yet | — |
| Ubuntu 20.04 LTS | lemonldap-ng | No fix yet | — |
| Ubuntu 18.04 LTS | lemonldap-ng | No fix yet | — |
| Ubuntu 16.04 LTS | lemonldap-ng | No fix yet | — |
Advisories 1
- DLA-3612-1 lemonldap-ng - security update Debian Security (DSA / DLA) · Mar 9, 2026