CVE-2026-66738
Received Received - Intake

SPIP Code Injection in SQLite via Navigation Menu

Publication date: 2026-08-10

Last updated on: 2026-08-10

Assigner: VulnCheck

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.

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Meta Information

Published
2026-08-10
Last Modified
2026-08-10
Generated
2026-08-10
AI Q&A
2026-08-10
EPSS Evaluated
N/A
NVD
CVE-2026-66738
EUVD
EUVD-2026-55655

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
spip spip to 4.4.18 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

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Executive Summary

SPIP before version 4.4.18 has a code injection flaw in SQLite-backed setups. The navigation menu endpoint mishandles array-type user input, bypassing sanitization. This allows an attacker with editor privileges to craft a GET request to /ecrire/?exec=navigation and execute arbitrary OS commands on the server.

Detection Guidance

To detect this vulnerability, check if your SPIP installation is SQLite-backed and running a version before 4.4.18. Inspect server logs for unusual GET requests to /ecrire/?exec=navigation with crafted parameters. Look for signs of unauthorized command execution or unexpected system activity.

Impact Analysis

An attacker could gain full control of the web server, steal data, install malware, or disrupt services. Systems using SQLite are at risk; MySQL setups are unaffected. Requires only editor-level access, making it dangerous for exposed environments.

Compliance Impact

This vulnerability could lead to unauthorized data access or exfiltration, violating GDPR (data protection) and HIPAA (health data security). Non-compliance risks fines, legal action, and reputational damage due to potential breaches of sensitive information.

Mitigation Strategies

Immediately upgrade SPIP to version 4.4.18 or later. If upgrading is not possible, restrict access to the /ecrire/?exec=navigation endpoint and ensure only trusted users have editor privileges. Review and monitor server logs for suspicious activity.

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