CVE-2026-26345: SPIP < 4.4.8 Cross-Site Scripting in Public Area
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 echapperhtmlsuspect() 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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-26345?
The severity of CVE-2026-26345 is considered moderate due to its potential for Cross-Site Scripting (XSS) attacks in the public area.
How do I fix CVE-2026-26345?
To fix CVE-2026-26345, upgrade SPIP to version 4.4.8 or later, which resolves the vulnerabilities in the echapper_html_suspect() function.
What type of vulnerability is CVE-2026-26345?
CVE-2026-26345 is a Cross-Site Scripting (XSS) vulnerability that allows attackers to inject malicious scripts into the public area of SPIP.
Which versions of SPIP are affected by CVE-2026-26345?
CVE-2026-26345 affects all versions of SPIP before 4.4.8.
What are the potential impacts of CVE-2026-26345 on users?
The potential impacts of CVE-2026-26345 include unauthorized script execution in visitors' browsers, which can lead to data theft or session hijacking.