CVE-2026-27475

SPIP before 4.4.9 allows Insecure Deserialization in the public area through the table_valeur filter and the DATA iterator, which accept serialized data. An attacker who can place malicious serialized content (a pre-condition requiring prior access or another vulnerability) can trigger arbitrary object instantiation and potentially achieve code execution. The use of serialized data in these components has been deprecated and will be removed in SPIP 5. This vulnerability is not mitigated by the SPIP security screen.

The following products are affected by CVE-2026-27475 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-27475.

URL	Resource
https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-9.html
https://git.spip.net/spip/spip
https://www.vulncheck.com/advisories/spip-insecure-deserialization