Cross-Site Scripting Vulnerability in SPIP by SPIP
CVE-2026-27474

4.8MEDIUM

Key Information:

Vendor

Spip

Status
Spip
Vendor
CVE Published:
19 February 2026

What is CVE-2026-27474?

SPIP versions prior to 4.4.9 are vulnerable to a Cross-Site Scripting (XSS) attack within the private area of the application. This vulnerability arises due to an incomplete fix from the previously released version 4.4.8. The root cause lies in the failure to consistently apply the echappe_anti_xss() function across critical HTML elements, including input fields, forms, buttons, and anchor tags. As a result, attackers can inject malicious scripts through these elements, which can compromise the integrity and security of the website.

Affected Version(s)

SPIP 4.4.0 < 4.4.9

References

https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-S...
vendor-advisorypatch
https://git.spip.net/spip/spip
product
https://www.vulncheck.com/advisories/spip-cross-site-scri...
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Dorian Piette (Trachinus)
.