Remote Code Execution Vulnerability in SPIP by SPIP Team
CVE-2026-77806

9.8CRITICAL

Key Information:

Vendor

Spip

Status
Spip
Vendor
CVE Published:
21 August 2026

What is CVE-2026-77806?

Prior to version 4.4.21, SPIP is susceptible to a critical remote code execution vulnerability. Unauthenticated attackers can exploit this weakness by sending specially crafted HTTP requests containing the X-Spip-Filtre header. This improperly handled data can lead to arbitrary code execution, putting affected systems at risk. Prompt updates to the latest version are essential to mitigate potential exploitation.

Affected Version(s)

SPIP 0 < 4.4.21

References

https://github.com/rapid7/metasploit-framework/pull/21790
https://github.com/rapid7/metasploit-framework/pull/21790...
https://blog.spip.net/Mise-a-jour-critique-de-securite-so...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.