CVE-2026-26345

SPIP before 4.4.8 contains a stored cross-site scripting (XSS) vulnerability in the public area triggered in certain edge-case usage patterns. The echapper_html_suspect() function does not adequately sanitize user-controlled content, allowing authenticated users with content-editing privileges (e.g., author-level roles and above) to inject malicious scripts. The injected payload may be rendered across multiple pages within the framework and execute in the browser context of other users, including administrators. Successful exploitation can allow attackers to perform actions in the security context of the victim user, including unauthorized modification of application state. This vulnerability is not mitigated by the SPIP security screen.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-8.html	Vendor Advisory Release Notes
https://git.spip.net/spip/spip	Product
https://www.vulncheck.com/advisories/spip-cross-site-scripting-in-public-area	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:spip:spip:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-02-19 16:27

Updated : 2026-02-24 19:51

NVD link : CVE-2026-26345

Mitre link : CVE-2026-26345

CVE.ORG link : CVE-2026-26345

JSON object : View

Products Affected

spip

spip

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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