SPIP before 4.4.18 contains a code injection vulnerability in SQLite-backed installations. (CVE-2026-66738)
Description
SPIP versions before 4.4.18 contain a code injection vulnerability affecting SQLite-backed installations. The vulnerability arises from improper handling of array-typed user input in the navigation menu endpoint, allowing authenticated users with editor privileges to execute arbitrary OS commands via a crafted GET request. MySQL-backed installations are not affected. The vulnerability has a CVSS score of 8.8, indicating high severity.
CVSS v3.1
Score 8.8high
Affected software
pkg:deb/ubuntu/spip?arch=source&distro=esm-apps/xenialpkg:deb/ubuntu/spip?arch=source&distro=esm-apps/bionicpkg:deb/ubuntu/spip?arch=source&distro=esm-apps/focalpkg:deb/ubuntu/spip?arch=source&distro=jammypkg:deb/ubuntu/spip?arch=source&distro=noblepkg:deb/ubuntu/spip?arch=source&distro=stonkingpkg:deb/ubuntu/spip?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
SPIP before version 4.4.18 has a code injection vulnerability in SQLite-backed installations. The navigation menu endpoint improperly processes array-typed user input, bypassing input sanitization and enabling the input to break out of an internal quoted string context when evaluated as PHP. An authenticated attacker with at least editor privileges can exploit this by sending a crafted GET request to /ecrire/?exec=navigation, resulting in arbitrary OS command execution within the web server process. This issue does not affect MySQL-backed installations.
Potential Impact
An attacker with authenticated editor-level access can execute arbitrary operating system commands on the web server hosting SPIP in SQLite-backed configurations. This can lead to full compromise of the server, including data theft, service disruption, or further network pivoting. MySQL-backed installations are not impacted by this vulnerability.
Mitigation Recommendations
A fix is available in SPIP version 4.4.18 and later. Users should upgrade to version 4.4.18 or newer to remediate this vulnerability. Until upgraded, restrict editor-level access to trusted users only and monitor for suspicious activity related to the navigation menu endpoint. No vendor advisory was provided, so verify patch availability from official SPIP sources.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-66738
- Osv Schema Version
- 1.7.0
- Ecosystems
- ["Ubuntu:Pro:16.04:LTS","Ubuntu:Pro:18.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:22.04:LTS","Ubuntu:24.04:LTS","Ubuntu:26.10","Ubuntu:26.04:LTS"]
- Cvss Version
- 3.1
Threat ID: 6ad3f5ae2cdf04f656662811
Added to database: 10/17/2026, 22:24:46 UTC
Last enriched: 10/18/2026, 00:06:17 UTC
Last updated: 10/18/2026, 00:06:17 UTC
Views: 2
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