RCE in Spip
CVE-2026-66738
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.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS 0.006, 48.2th percentile (scored ); unchanged over 30 days. About EPSS.
Affected products
- Spip — versions 0
Weakness classification (CWE)
Public exploits and proof-of-concept code
1 public repository with exploit or proof-of-concept code for this CVE:
- fixedbyreboot/CVE-2026-66738-POC (last pushed 2026-11-10): POC exploit for CVE-2026-66738 - authenticated code injection to OS command execution in SPIP via the navigation editor endpoint on SQLite installs. Vulnerable 4.4.16 vs fixed 4.4.18 control.
References
- Release Notes (release-notes)
- www.vulncheck.com/advisories/spip-code-injection-via-navigation-endpoint-on-sql… (third-party-advisory)
This CVE has public exploit evidence. See the latest CVEs with public exploits.