CVE-2026-27475

HIGH

8.1

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.

CVE Details

CVSS v3.1 Score8.1

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredNONE

User InteractionNONE

Published2/19/2026

Last Modified2/24/2026

Sourcenvd

Honeypot Sightings0

Affected Products

spip:spip

Weaknesses (CWE)

CWE-502

References

https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-9.html(disclosure@vulncheck.com)

https://git.spip.net/spip/spip(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/spip-insecure-deserialization(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

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