CVE-2026-27474
Received Received - Intake
Cross-Site Scripting in SPIP Private Area Before

Publication date: 2026-02-19

Last updated on: 2026-03-02

Assigner: VulnCheck

Description
SPIP before 4.4.9 allows Cross-Site Scripting (XSS) in the private area, complementing an incomplete fix from SPIP 4.4.8. The echappe_anti_xss() function was not systematically applied to input, form, button, and anchor (a) HTML tags, allowing an attacker to inject malicious scripts through these elements. This vulnerability is not mitigated by the SPIP security screen.
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Meta Information
Published
2026-02-19
Last Modified
2026-03-02
Generated
2026-06-16
AI Q&A
2026-02-19
EPSS Evaluated
2026-06-14
NVD
CVE-2026-27474
EUVD
EUVD-2026-8320
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
spip spip From 4.4.0 (inc) to 4.4.9 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

This vulnerability affects SPIP versions before 4.4.9 and is a Cross-Site Scripting (XSS) issue in the private area of the software.

The problem arises because the echappe_anti_xss() function, which is intended to prevent XSS attacks, was not consistently applied to certain HTML tags such as input, form, button, and anchor (a) tags.

As a result, an attacker can inject malicious scripts through these elements, potentially compromising the security of the private area.

Additionally, this vulnerability is not mitigated by the SPIP security screen, making it easier for attackers to exploit.

Impact Analysis

This vulnerability can allow an attacker to execute malicious scripts in the context of the private area of SPIP.

Such Cross-Site Scripting (XSS) attacks can lead to unauthorized actions being performed on behalf of legitimate users, theft of sensitive information such as session cookies, or defacement of the website.

Because the vulnerability is not mitigated by the SPIP security screen, the risk of exploitation is higher.

Compliance Impact

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Detection Guidance

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Mitigation Strategies

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