Cross-Site Scripting Vulnerability in svg-sanitizer Affecting Web Applications
CVE-2026-121447

5.3MEDIUM

Key Information:

Vendor

Darylldoyle

Status
Svg-sanitizer
Vendor
CVE Published:
3 November 2026

What is CVE-2026-121447?

The svg-sanitizer library prior to version 1.1.0 is susceptible to a cross-site scripting vulnerability that enables attackers to inject malicious JavaScript via the animateTransform attributes in crafted SVG files. This could particularly affect users on Safari, as clicking on links manipulated in this manner would execute arbitrary JavaScript, thereby compromising the integrity of affected web applications and potentially leading to unauthorized actions or data breaches.

Affected Version(s)

svg-sanitizer 0 < 1.1.0

svg-sanitizer 1.1.0

References

https://github.com/darylldoyle/svg-sanitizer/security/adv...
vendor-advisory
https://www.vulncheck.com/advisories/svg-sanitizer-before...
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

prudloff-insite
.