CVE-2026-27474

MEDIUM 6.1

SPIP < 4.4.9 Cross-Site Scripting in Private Area (Incomplete Fix)

CVSS Score

6.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

Vendor	spip
Product	spip
Published	Feb 19, 2026
Last Updated	Mar 5, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

SPIP / SPIP

4.4.0 < 4.4.9

References

NVD ↗ CVE.org ↗ EPSS Data ↗

blog.spip.net: https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-9.html git.spip.net: https://git.spip.net/spip/spip vulncheck.com: https://www.vulncheck.com/advisories/spip-cross-site-scripting-in-private-area-incomplete-fix

Credits

Dorian Piette (Trachinus)