Cross-Site Scripting Vulnerability in SPIP Affected by Malicious Iframe Tags
CVE-2026-26223

5.1MEDIUM

Key Information:

Vendor

Spip

Status
Spip
Vendor
CVE Published:
19 February 2026

What is CVE-2026-26223?

A Cross-Site Scripting vulnerability was identified in SPIP versions prior to 4.4.8, enabling unauthorized script execution through malicious iframe tags in the private area. This flaw occurs because the application fails to properly sandbox or escape iframe content, creating an opportunity for attackers to inject harmful scripts. The introduction of a sandbox attribute for iframe tags in the latest update addresses this security concern, although the vulnerability is not countered by the SPIP security screen.

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Deploy the Patch

Affected Version(s)

SPIP 4.4.0 < 4.4.8

References

https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-S...
vendor-advisorypatch
https://git.spip.net/spip/spip
product
https://www.vulncheck.com/advisories/spip-cross-site-scri...
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Arthur Deloffre (Vozec)
Louka Jacques-Chevallier (Laluka)
Philippe Boussin
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