CVE-2026-27474 | THREATINT

Description

SPIP before 4.4.9 allows Cross-Site Scripting (XSS) in the private area, complementing an incomplete fix from SPIP 4.4.8. The echappe_anti_xss() function was not systematically applied to input, form, button, and anchor (a) HTML tags, allowing an attacker to inject malicious scripts through these elements. This vulnerability is not mitigated by the SPIP security screen.

PUBLISHED Reserved 2026-02-19 | Published 2026-02-19 | Updated 2026-02-20 | Assigner VulnCheck

MEDIUM: 4.8CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/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 4.4.9

affected

Credits

Dorian Piette (Trachinus) finder

References

blog.spip.net/...-jour-de-securite-sortie-de-SPIP-4-4-9.html vendor-advisory patch

git.spip.net/spip/spip product

www.vulncheck.com/...cripting-in-private-area-incomplete-fix (VulnCheck Advisory: SPIP < 4.4.9 Cross-Site Scripting in Private Area (Incomplete Fix)) third-party-advisory

cve.org (CVE-2026-27474)

nvd.nist.gov (CVE-2026-27474)

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