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Description

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.

PUBLISHED Reserved 2026-02-11 | Published 2026-02-19 | Updated 2026-02-23 | Assigner VulnCheck




MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

MEDIUM: 5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Problem types

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

Product status

Default status
unaffected

4.4.0 (semver) before 4.4.8
affected

Credits

Arthur Deloffre (Vozec) finder

Louka Jacques-Chevallier (Laluka) finder

References

blog.spip.net/...-jour-de-securite-sortie-de-SPIP-4-4-8.html vendor-advisory patch

git.spip.net/spip/spip product

www.vulncheck.com/...ripting-via-iframe-tags-in-private-area (VulnCheck Advisory: SPIP < 4.4.8 Cross-Site Scripting via Iframe Tags in Private Area) third-party-advisory

cve.org (CVE-2026-26223)

nvd.nist.gov (CVE-2026-26223)

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