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TI-2026-21880 Aliases CVE-2026-27473GHSA-fgj6-7f58-836m

SPIP < 4.4.9 Stored Cross-Site Scripting via Syndicated Sites

Priority LOW 23CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

SPIP before 4.4.9 allows Stored Cross-Site Scripting (XSS) via syndicated sites in the private area. The #URL_SYNDIC output is not properly sanitized on the private syndicated site page, allowing an attacker who can set a malicious syndication URL to inject persistent scripts that execute when other administrators view the syndicated site details.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00302 23rd 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
Partial

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-2026-21882 SPIP < 4.4.9 Insecure DeserializationPriority MEDIUM 43
    • TI-2026-21879 SPIP < 4.4.9 Blind Server-Side Request Forgery via Syndicated SitesPriority LOW 24
    • 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-2026-27473
  2. 2026-10-03 Alias added: GHSA-fgj6-7f58-836m

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