CVE-2026-27473

medium

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.

References

https://www.vulncheck.com/advisories/spip-stored-cross-site-scripting-via-syndicated-sites

https://git.spip.net/spip/spip

https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-9.html

Details

Source: Mitre, NVD

Published: 2026-02-19

Updated: 2026-02-19

Risk Information

CVSS v2

Base Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.4

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

Severity: Medium

CVSS v4

Base Score: 5.1

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

Severity: Medium