CVE-2026-27743

The SPIP referer_spam plugin versions prior to 1.3.0 contain an unauthenticated SQL injection vulnerability in the referer_spam_ajouter and referer_spam_supprimer action handlers. The handlers read the url parameter from a GET request and interpolate it directly into SQL LIKE clauses without input validation or parameterization. The endpoints do not enforce authorization checks and do not use SPIP action protections such as securiser_action(), allowing remote attackers to execute arbitrary SQL queries.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-10.html	Release Notes
https://chocapikk.com/posts/2026/spip-plugins-vulnerabilities/	Exploit Third Party Advisory
https://git.spip.net/spip-contrib-extensions/referer_spam/-/commit/33682df73cd5f7e9c72d8c4d5088611fa2441683	Patch
https://plugins.spip.net/referer_spam.html	Product
https://www.vulncheck.com/advisories/spip-referer-spam-unauthenticated-sql-injection	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:spip:referer_spam:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-02-25 04:16

Updated : 2026-03-03 19:11

NVD link : CVE-2026-27743

Mitre link : CVE-2026-27743

CVE.ORG link : CVE-2026-27743

JSON object : View

Products Affected

spip

referer_spam

CWE

CWE-89

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

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Los endpoints no aplican comprobaciones de autorizaci\u00f3n y no utilizan protecciones de acci\u00f3n de SPIP como securiser_action(), lo que permite a atacantes en remoto ejecutar consultas SQL arbitrarias."}], "lastModified": "2026-03-03T19:11:51.893", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:spip:referer_spam:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "ECB39215-63F1-4E34-BF21-F1D136600C3F", "versionEndExcluding": "1.3.0"}], "operator": "OR"}]}], "sourceIdentifier": "disclosure@vulncheck.com"}