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TI-2026-21882 Aliases CVE-2026-27475GHSA-hxjp-v4qc-fcjg

SPIP < 4.4.9 Insecure Deserialization

Priority MEDIUM 43CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-502.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0091 60th percentileScored 2026-11-07
Fix Fixed SPIP (SPIP): 4.4.9

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SPIPSPIP4.4.0 to before 4.4.94.4.9Patch availableCNA
  • SPIP VendorSPIP Affected 4.4.0 to before 4.4.9 Fixed in 4.4.9 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:spip:spip:*:*:*:*:*:*:*:*4.4.0 to before 4.4.9VulnerableSPIP
  • cpe:2.3:a:spip:spip:*:*:*:*:*:*:*:* Versions 4.4.0 to before 4.4.9 Vulnerable ·SPIP

Remediation

  • Fix · CNA SPIP (SPIP) Fixed in 4.4.9

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    SPIP — blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-9.…

    4 records Highest priority Priority MEDIUM 1 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2026-21879 SPIP < 4.4.9 Blind Server-Side Request Forgery via Syndicated SitesPriority LOW 24
    • TI-2026-21880 SPIP < 4.4.9 Stored Cross-Site Scripting via Syndicated SitesPriority LOW 23
    • TI-2026-21881 SPIP < 4.4.9 Cross-Site Scripting in Private Area (Incomplete Fix)Priority LOW 22
    Show all 4 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-27475
  2. 2026-10-03 Alias added: GHSA-hxjp-v4qc-fcjg

References

Patch 1

Other 1

  • TI-2023-12107 SPIP before 4.2.1 allows Remote Code Execution via form values in the public area because… CVSS 3.1CRITICAL 9.8
  • TI-2024-07895 SPIP Bigup Multipart File Upload OS Command Injection CVSS 3.1CRITICAL 9.8
  • TI-2022-17317 RCE in SPIP 3.1.13 through 4.1.2 allows remote authenticated users to execute arbitrary code via the _oups parameter. CVSS 3.1HIGH 8.8
  • TI-2024-35862 An authenticated arbitrary file upload vulnerability in the Documents module of SPIP… CVSS 3.1MEDIUM 6.3
  • TI-2023-30183 Spip 4.1.10 Admin Account Spoofing via Malicious SVG Upload CVSS 4.0MEDIUM 4.8
  • TI-2013-04002 The Security Screen (_core_/securite/ecran_securite.php) before 1.1.8 for SPIP, as used… CVSS 2.0HIGH 7.5
See all 68 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences