CVE-2026-27743

Name: CVE-2026-27743
Creator: NVD / NIST
Published: 2026-02-25T04:16:04.783+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.3/10EPSS 0.60%

Last modified Jun 17, 2026

CVE-2026-27743 is a critical-severity vulnerability rated 9.3/10 on the CVSS scale. 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. EPSS estimates a 0.60% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

CVSS 4.0

9.3/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.60%

44.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-89

Affected Software

Vendor	Product	Versions
Spip	Referer Spam	< 1.3.0

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/Exploit, Third Party Advisory
https://git.spip.net/spip-contrib-extensions/referer_spam/-/commit/33682df73cd5f7e9c72d8c4d5088611fa2441683Patch
https://plugins.spip.net/referer_spam.htmlProduct
https://www.vulncheck.com/advisories/spip-referer-spam-unauthenticated-sql-injectionThird Party Advisory

Timeline

Published: Feb 25, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-27743?

How severe is CVE-2026-27743?

CVE-2026-27743 has a CVSS score of 9.3/10 (CRITICAL severity). The EPSS model estimates a 0.60% probability of exploitation in the next 30 days.

How do I fix CVE-2026-27743?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-27743?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST