Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Spip | Spip | >= 4.4.0, < 4.4.9 |
Related Weaknesses (CWE)
References
- https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-9.htmlVendor AdvisoryRelease Notes
- https://git.spip.net/spip/spipProduct
- https://www.vulncheck.com/advisories/spip-insecure-deserializationThird Party Advisory
FAQ
What is CVE-2026-27475?
CVE-2026-27475 is a vulnerability with a CVSS score of 8.1 (HIGH). 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...
How severe is CVE-2026-27475?
CVE-2026-27475 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-27475?
Check the references section above for vendor advisories and patch information. Affected products include: Spip Spip.