Description
The shibboleth_login_form function in shibboleth.php in the Shibboleth plugin before 1.8 for WordPress is prone to an XSS vulnerability due to improper use of add_query_arg().
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 13 | wordpress-shibboleth | 1.8-1 | — |
| Debian 12 | wordpress-shibboleth | 1.8-1 | — |
| Debian 9 | wordpress-shibboleth | 1.4-2+deb9u1 | DSA-3973-1 |
| Debian 8 | wordpress-shibboleth | 1.4-2+deb8u1 | DSA-3973-1 |
| Debian 7 | wordpress-shibboleth | 1.4-2+deb7u1 | DLA-1096-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | wordpress-shibboleth | 1.4-2+deb8u1build0.16.04.2 | — |
| Ubuntu 14.04 LTS | wordpress-shibboleth | 1.4-2+deb8u1build0.14.04.2 | — |
Advisories 2
- DSA-3973-1 wordpress-shibboleth - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1096-1 wordpress-shibboleth - security update Debian Security (DSA / DLA) · Mar 9, 2026