SPIP before 4.4.8 allows hackers to inject malicious scripts

Summary

SPIP, a content management system, contains a vulnerability that lets hackers inject malicious code into the system. This can allow them to take actions in the system as if they were other users, including administrators. To fix this, update to version 4.4.8 or later.

What to do

No fix is available yet. Check with your software vendor for updates.

Affected software

Vendor	Product	Affected versions	Fix available
spip	spip	> 4.4.0 , <= 4.4.8	–

Original title

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 adequate...

Original description

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.

nvd CVSS3.1 5.4

nvd CVSS4.0 8.6

Vulnerability type

CWE-79 Cross-site Scripting (XSS)

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