What is CVE-2026-121447?

CVE-2026-121447 is a medium-severity vulnerability in Darylldoyle Svg-Sanitizer, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-11-03.

How severe is CVE-2026-121447?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Darylldoyle Svg-Sanitizer

CVE-2026-121447

svg-sanitizer before 1.1.0 contains a cross-site scripting vulnerability that allows attackers to bypass sanitization by placing javascript: URLs in the animateTransform values attribute. Attackers can upload crafted SVG files whose animateTransform targets the href attribute, executing arbitrary JavaScript when Safari users click the link.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-11-03 · last modified 2026-11-03.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Darylldoyle Svg-Sanitizer

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-q546-85r6-f39q (vendor-advisory)
www.vulncheck.com/advisories/svg-sanitizer-before-1.1.0-xss-via-animatetransfor… (third-party-advisory)

Frequently asked questions

What is CVE-2026-121447?: CVE-2026-121447 is a medium-severity vulnerability in Darylldoyle Svg-Sanitizer, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-11-03.
How severe is CVE-2026-121447?: Medium severity. CVSS v3 base score is 6.1 out of 10.