CVE-2026-27747: SPIP Translation Plugin SQLi Vulnerability

CVE-2026-27747 Overview

The SPIP interface_traduction_objets plugin versions prior to 2.2.2 contain an authenticated SQL injection vulnerability in interface_traduction_objets_pipelines.php. When handling translation requests, the plugin reads the id_parent parameter from user-supplied input and concatenates it directly into a SQL WHERE clause in a call to sql_getfetsel() without input validation or parameterization. An authenticated attacker with editor-level privileges can inject crafted SQL expressions into the id_parent parameter to manipulate the backend query. Successful exploitation can result in disclosure or modification of database contents and may lead to denial of service depending on the database configuration and privileges.

Critical Impact

Authenticated SQL injection allowing database content disclosure, modification, and potential denial of service via the id_parent parameter in the SPIP translation plugin.

Affected Products

• SPIP interface_traduction_objets plugin versions prior to 2.2.2
• SPIP CMS installations utilizing the vulnerable translation plugin
• Systems where authenticated users have editor-level privileges

Discovery Timeline

• 2026-02-25 - CVE-2026-27747 published to NVD
• 2026-02-26 - Last updated in NVD database

Technical Details for CVE-2026-27747

Vulnerability Analysis

This vulnerability is classified as CWE-89 (SQL Injection), a critical web application security flaw that occurs when untrusted data is sent to an interpreter as part of a command or query. In this case, the interface_traduction_objets plugin fails to properly sanitize the id_parent parameter before incorporating it into database queries.

The vulnerable code path exists within interface_traduction_objets_pipelines.php, where translation request handling logic directly concatenates user-supplied input into SQL statements. The sql_getfetsel() function, which is used to fetch a single field from a database query result, receives the tainted input without any form of parameterization or escaping.

The attack requires authentication with at least editor-level privileges, which limits the attack surface but does not eliminate the risk. Organizations with multiple content editors or compromised editor accounts remain vulnerable. The network-based attack vector with low complexity makes exploitation straightforward once authentication is achieved.

Root Cause

The root cause of this vulnerability is improper input handling in the translation pipeline. The id_parent parameter is extracted from user input and directly concatenated into a SQL WHERE clause without any validation, sanitization, or use of prepared statements. This violates the fundamental security principle of treating all user input as untrusted. The sql_getfetsel() function expects safe input, but the calling code fails to ensure input safety before passing parameters.

Attack Vector

An authenticated attacker with editor-level privileges can exploit this vulnerability by submitting a malicious translation request containing crafted SQL expressions in the id_parent parameter. The injected SQL is incorporated into the WHERE clause of the backend query, allowing the attacker to:

1. Extract sensitive data from the database through UNION-based or blind SQL injection techniques
2. Modify database contents by leveraging stacked queries if supported by the database configuration
3. Cause denial of service by executing resource-intensive queries or corrupting critical data

The vulnerability is accessible over the network, requiring no special conditions beyond valid authentication. Attackers can craft requests to the translation handling endpoints, inserting SQL payloads that bypass the intended query logic.

The vulnerability mechanism involves the direct string concatenation of the id_parent parameter into SQL statements. When a translation request is processed, the plugin extracts this parameter and builds a query like SELECT field FROM table WHERE id_parent = [user_input] without parameterization. For detailed technical analysis, see the VulnCheck SQL Injection Advisory and the security commit.

Detection Methods for CVE-2026-27747

Indicators of Compromise

• Unusual SQL syntax or error messages in web application logs related to translation requests
• Unexpected database queries containing UNION, SELECT, or other SQL keywords in the id_parent parameter
• Anomalous database access patterns from authenticated editor accounts
• Web access logs showing requests to translation endpoints with encoded or malformed parameters

Detection Strategies

• Deploy web application firewall (WAF) rules to detect SQL injection patterns in request parameters
• Monitor application logs for SQL syntax errors or database exceptions originating from the translation plugin
• Implement database query logging to identify anomalous queries targeting translation-related tables
• Configure intrusion detection systems (IDS) to alert on common SQL injection payloads in HTTP traffic

Monitoring Recommendations

• Enable verbose logging for the SPIP CMS and the interface_traduction_objets plugin
• Monitor database audit logs for unauthorized data access or modification attempts
• Set up alerts for failed SQL queries or database errors associated with translation functionality
• Review editor account activity logs for suspicious behavior patterns

How to Mitigate CVE-2026-27747

Immediate Actions Required

• Update the interface_traduction_objets plugin to version 2.2.2 or later immediately
• Review database access logs for any signs of exploitation attempts
• Audit editor-level user accounts for unauthorized or compromised access
• Consider temporarily disabling the translation plugin if immediate patching is not possible

Patch Information

The vulnerability has been addressed in interface_traduction_objets version 2.2.2. The fix implements proper input validation and parameterized queries for the id_parent parameter. Organizations should update to the patched version as soon as possible. For additional context, refer to the SPIP Security Update Release and the plugin information page.

The security patch can be verified at the SPIP Commit Overview.

Workarounds

• Restrict editor-level access to trusted users only until patching is complete
• Implement WAF rules to block requests containing SQL injection patterns in the id_parent parameter
• Disable the interface_traduction_objets plugin temporarily if translation functionality is not critical
• Apply network segmentation to limit database access from web application servers

# Verify installed plugin version in SPIP
grep -r "version" /path/to/spip/plugins/interface_traduction_objets/paquet.xml

# Update plugin via SPIP plugin manager or manually download patched version
# Ensure version 2.2.2 or higher is installed