Medium severity · published Feb 19, 2026
CVE-2026-27473
SPIP < 4.4.9 Stored Cross-Site Scripting via Syndicated Sites
6.4
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SP
SPIP · SPIP
4.4.0 before 4.4.9 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-27473
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-27473
Release Notes
https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-9.html
Product
https://git.spip.net/spip/spip
Third Party Advisory
https://www.vulncheck.com/advisories/spip-stored-cross-site-scripting-via-syndicated-sites
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