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CVE-2026-27475

SPIP < 4.4.9 Insecure Deserialization

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 4.4.9
1 proof of concept on GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • SPIP SPIP

    From 4.4.0 · fixed in 4.4.9

References 4

blog.spip.net

git.spip.net

vulncheck.com

GitHub · Trachinus/CVE-2026-27475