XSS in Spip
CVE-2025-71240
SPIP before 4.2.15 allows Cross-Site Scripting (XSS) via crafted content in HTML code tags. The application does not properly verify JavaScript within code tags, allowing an attacker to inject malicious scripts that execute in a victim's browser.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (6.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Spip — versions 4.2.0
Weakness classification (CWE)
References
- blog.spip.net/Mise-a-jour-de-maintenance-et-securite-sortie-de-SPIP-4-2-15.html (vendor-advisory, Release Notes, patch)
- git.spip.net/spip/spip (Product, product)
- www.vulncheck.com/advisories/spip-cross-site-scripting-via-code-tags (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2025-71240?
- CVE-2025-71240 is a medium-severity vulnerability in Spip, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-02-19.
- How severe is CVE-2025-71240?
- Medium severity. CVSS v3 base score is 5.4 out of 10.