SPIP before 4.2.1 allows Remote Code Execution via form values in the public area because serialization is mishandled. The fixed versions are 3.2.18, 4.0.10, 4.1.8, and 4.2.1.
| Software | From | Fixed in |
|---|---|---|
| spip / spip | 4.2.0-alpha2 | 4.2.0-alpha2.x |
| spip / spip | 4.2.0-alpha | 4.2.0-alpha.x |
| spip / spip | 4.2.0 | 4.2.0.x |
| spip / spip | 4.1.0 | 4.1.8 |
| spip / spip | 4.0.0 | 4.0.10 |
| spip / spip | - | 3.2.18 |
| debian / debian_linux | 11.0 | 11.0.x |