CVE-2026-27743
SPIP referer_spam <= 1.2.1 Unauthenticated SQL Injection
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-89 |
| Vendor | spip |
| Product | referer_spam |
| Published | Feb 25, 2026 |
| Last Updated | Mar 5, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
SPIP / referer_spam
0 < 1.3.0
References
chocapikk.com: https://chocapikk.com/posts/2026/spip-plugins-vulnerabilities/ blog.spip.net: https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-10.html plugins.spip.net: https://plugins.spip.net/referer_spam.html git.spip.net: https://git.spip.net/spip-contrib-extensions/referer_spam/-/commit/33682df73cd5f7e9c72d8c4d5088611fa2441683 vulncheck.com: https://www.vulncheck.com/advisories/spip-referer-spam-unauthenticated-sql-injection
Credits
Valentin Lobstein (Chocapikk) VulnCheck