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.

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)

EPSS: 0.003 (19.0th percentile) — read the EPSS interpretation.

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.

Affected products

Spip — versions 4.1.10

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

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.