CVE-2026-27743
SPIP referer_spam <= 1.2.1 Unauthenticated SQL Injection
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.
INFO
Published Date :
Feb. 25, 2026, 4:16 a.m.
Last Modified :
Feb. 27, 2026, 6:38 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 4.0 | CRITICAL | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | CRITICAL | [email protected] | ||||
| CVSS 4.0 | CRITICAL | [email protected] |
Solution
- Update the referer_spam plugin to version 1.3.0 or later.
- Ensure action handlers are properly authorized and parameterized.
- Sanitize all user inputs before SQL queries.
Public PoC/Exploit Available at Github
CVE-2026-27743 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-27743.
| URL | 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 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-27743 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-27743
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-27743 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-27743 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Feb. 27, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:spip:referer_spam*:*:*:*:*:*:*:*:* versions up to (excluding) 1.3.0 Added Reference Type VulnCheck: https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-10.html Types: Release Notes Added Reference Type VulnCheck: https://chocapikk.com/posts/2026/spip-plugins-vulnerabilities/ Types: Exploit, Third Party Advisory Added Reference Type VulnCheck: https://git.spip.net/spip-contrib-extensions/referer_spam/-/commit/33682df73cd5f7e9c72d8c4d5088611fa2441683 Types: Patch Added Reference Type VulnCheck: https://plugins.spip.net/referer_spam.html Types: Product Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/spip-referer-spam-unauthenticated-sql-injection Types: Third Party Advisory -
CVE Modified by [email protected]
Feb. 26, 2026
Action Type Old Value New Value Added Reference https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-10.html -
CVE Modified by [email protected]
Feb. 25, 2026
Action Type Old Value New Value Added CVSS V4.0 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 Removed CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/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 Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added Reference https://chocapikk.com/posts/2026/spip-plugins-vulnerabilities/ -
New CVE Received by [email protected]
Feb. 25, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/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 Added CWE CWE-89 Added Reference https://git.spip.net/spip-contrib-extensions/referer_spam/-/commit/33682df73cd5f7e9c72d8c4d5088611fa2441683 Added Reference https://plugins.spip.net/referer_spam.html Added Reference https://www.vulncheck.com/advisories/spip-referer-spam-unauthenticated-sql-injection