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CVE-2026-27743

CRITICAL

9.8

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/25/2026

Last Modified3/3/2026

Sourcenvd

Honeypot Sightings0

Affected Products

spip:referer_spam

Weaknesses (CWE)

CWE-89

References

https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-10.html(disclosure@vulncheck.com)

https://chocapikk.com/posts/2026/spip-plugins-vulnerabilities/(disclosure@vulncheck.com)

https://git.spip.net/spip-contrib-extensions/referer_spam/-/commit/33682df73cd5f7e9c72d8c4d5088611fa2441683(disclosure@vulncheck.com)

https://plugins.spip.net/referer_spam.html(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/spip-referer-spam-unauthenticated-sql-injection(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

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