CVE-2026-26223

SPIP before 4.4.8 allows cross-site scripting (XSS) in the private area via malicious iframe tags. The application does not properly sandbox or escape iframe content in the back-office, allowing an attacker to inject and execute malicious scripts. The fix adds a sandbox attribute to iframe tags in the private area. This vulnerability is not mitigated by the SPIP security screen.

• CWE-79

• https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-8.htmlRelease Notes, Vendor Advisory
• https://git.spip.net/spip/spipProduct
• https://www.vulncheck.com/advisories/spip-cross-site-scripting-via-iframe-tags-in-private-areaThird Party Advisory

Published

Feb 19, 2026

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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