Vulnerability Description
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 Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Spip | Referer Spam | < 1.3.0 |
Related Weaknesses (CWE)
References
- https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-10.htmlRelease Notes
- https://chocapikk.com/posts/2026/spip-plugins-vulnerabilities/ExploitThird Party Advisory
- https://git.spip.net/spip-contrib-extensions/referer_spam/-/commit/33682df73cd5fPatch
- https://plugins.spip.net/referer_spam.htmlProduct
- https://www.vulncheck.com/advisories/spip-referer-spam-unauthenticated-sql-injecThird Party Advisory
FAQ
What is CVE-2026-27743?
CVE-2026-27743 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 th...
How severe is CVE-2026-27743?
CVE-2026-27743 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-27743?
Check the references section above for vendor advisories and patch information. Affected products include: Spip Referer Spam.