Description
SPIP before 4.4.5 and 4.3.9 allows an Open Redirect via the login form when used in AJAX mode. An attacker can craft a malicious URL that, when visited by a victim, redirects them to an arbitrary external site after login. This vulnerability only affects sites where the login page has been overridden to function in AJAX mode. It is not mitigated by the SPIP security screen.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| SPIP | SPIP | 4.3.0 – < 4.3.9, 4.4.0 – < 4.4.5 | 4.3.9 |
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 | spip | 4.4.5+dfsg-1 | — |
| Debian 13 | spip | 4.4.5+dfsg-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | spip | No fix yet | — |
| Ubuntu 24.04 LTS | spip | No fix yet | — |
| Ubuntu 22.04 LTS | spip | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | spip | No fix yet | — |
| Ubuntu Pro 18.04 LTS | spip | No fix yet | — |
| Ubuntu Pro 16.04 LTS | spip | No fix yet | — |
References
- https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-5.html vendor-advisory patch
- https://git.spip.net/spip/spip product
- VulnCheck Advisory: SPIP < 4.4.5 Open Redirect via Login Form third-party-advisory