CVE-2026-26223

5.1 mediumEPSS 0.2%

Medium (5.1) in spip spip. EPSS 0.2% chance of exploitation in the next 30 days.

SPIP before 4.4.8 allows cross-site scripting (XSS) in the private area via malicious iframe tags. The application does not properly sandbox or escape iframe content in the back-office, allowing an attacker to inject and execute malicious scripts. The fix adds a sandbox attribute to iframe tags in the private area. This vulnerability is not mitigated by the SPIP security screen.

Severity

CVSS 4.0

5.1 medium

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

CVSS 3.1

6.1 medium

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 10% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-02-19
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

spip:spip

References

https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-8.html
https://git.spip.net/spip/spip
https://www.vulncheck.com/advisories/spip-cross-site-scripting-via-iframe-tags-in-private-area

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