CVE-2026-27473 | THREATINT

Description

SPIP before 4.4.9 allows Stored Cross-Site Scripting (XSS) via syndicated sites in the private area. The #URL_SYNDIC output is not properly sanitized on the private syndicated site page, allowing an attacker who can set a malicious syndication URL to inject persistent scripts that execute when other administrators view the syndicated site details.

PUBLISHED Reserved 2026-02-19 | Published 2026-02-19 | Updated 2026-02-20 | 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: 6.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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/...oss-site-scripting-via-syndicated-sites (VulnCheck Advisory: SPIP < 4.4.9 Stored Cross-Site Scripting via Syndicated Sites) third-party-advisory

cve.org (CVE-2026-27473)

nvd.nist.gov (CVE-2026-27473)

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