What’s Vulnerable › Vulnerabilities

CVE-2026-26345: SPIP < 4.4.8 Cross-Site Scripting in Public Area

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-19 · updated 2026-06-17
• Weakness: CWE-79

Description

SPIP before 4.4.8 contains a stored cross-site scripting (XSS) vulnerability in the public area triggered in certain edge-case usage patterns. The echapper_html_suspect() function does not adequately sanitize user-controlled content, allowing authenticated users with content-editing privileges (e.g., author-level roles and above) to inject malicious scripts. The injected payload may be rendered across multiple pages within the framework and execute in the browser context of other users, including administrators. Successful exploitation can allow attackers to perform actions in the security context of the victim user, including unauthorized modification of application state. This vulnerability is not mitigated by the SPIP security screen.

Affected products

• SPIP: from 4.4.0 before 4.4.8 — fixed in 4.4.8

How to fix

Upgrade to a fixed version: SPIP 4.4.8. Check the vendor advisory for mitigations.

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-in-public-area

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