XSS in Spip
CVE-2023-53900
Spip 4.1.10 contains a file upload vulnerability that allows attackers to upload malicious SVG files with embedded external links. Attackers can trick administrators into clicking a crafted SVG logo that redirects to a potentially dangerous URL through improper file upload filtering.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (22.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Spip — versions 4.1.10
Weakness classification (CWE)
References
- ExploitDB-51557 (Exploit, exploit)
- SPIP Product Webpage (Product, product)
- VulnCheck Advisory: Spip 4.1.10 Admin Account Spoofing via Malicious SVG Upload (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2023-53900?
- CVE-2023-53900 is a high-severity vulnerability in Spip, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2025-12-16.
- How severe is CVE-2023-53900?
- High severity. CVSS v3 base score is 8.8 out of 10.