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CVE-2026-77806

SPIP before 4.4.21 allows unauthenticated remote attackers to execute arbitrary code, as exploited in the wild in August 2026.

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 4.4.21
1 proof of concept on GitHub, 1 Nuclei template
  • Exploitation: none
  • Automatable: yes
  • Technical impact: total

Summary

SPIP before 4.4.21 allows unauthenticated remote attackers to execute arbitrary code, as exploited in the wild in August 2026. This is related to code injection via an X-Spip-Filtre HTTP request header that is mishandled by analyse_resultat_skel.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: yes · Technical impact: total

  3. Record last updated

Affected versions

  • SPIP SPIP

    fixed in 4.4.21

References 6

GitHub · rapid7/metasploit-framework

blog.spip.net

GitHub · projectdiscovery/nuclei-templates

GitHub · CuteeCat/CVE-2026-77806