Vulnerability Description
SPIP before 4.4.18 contains a code injection vulnerability in SQLite-backed installations. The navigation menu endpoint improperly handles array-typed user input, which bypasses input sanitization and allows the value to break out of an internal quoted string context when evaluated as PHP. An authenticated attacker with at minimum editor (redacteur) privileges can submit a single crafted GET request to /ecrire/?exec=navigation to execute arbitrary OS commands in the web server process. MySQL-backed installations are not affected.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://blog.spip.net/Mise-a-jour-critique-de-securite-sortie-de-SPIP-4-4-18.htm
- https://www.vulncheck.com/advisories/spip-code-injection-via-navigation-endpoint
FAQ
What is CVE-2026-66738?
CVE-2026-66738 is a vulnerability with a CVSS score of 8.8 (HIGH). SPIP before 4.4.18 contains a code injection vulnerability in SQLite-backed installations. The navigation menu endpoint improperly handles array-typed user input, which bypasses input sanitization and...
How severe is CVE-2026-66738?
CVE-2026-66738 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-66738?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.