Description
In the portal in LemonLDAP::NG before 2.21.0, cross-site scripting (XSS) allows remote attackers to inject arbitrary web script or HTML (into the login page) via the tab parameter, for Choice authentication.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| lemonldap-ng | LemonLDAP::NG | 2.0.8 – < 2.16.5, 2.17.0 – < 2.21.0 | 2.16.5 |
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 | 2.21.0+ds-1 | — |
| Debian 13 | lemonldap-ng | 2.21.0+ds-1 | — |
| Debian 12 | lemonldap-ng | 2.16.1+ds-deb12u6 | DSA-5897-1 |
| Debian 11 | lemonldap-ng | 2.0.11+ds-4+deb11u7 | DLA-4119-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | lemonldap-ng | No fix yet | — |
| 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 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | lemonldap-ng | No fix yet | — |
Advisories 2
- DSA-5897-1 lemonldap-ng - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-4119-1 lemonldap-ng - security update Debian Security (DSA / DLA) · Mar 9, 2026