Cross-site scripting in SVG Sanitizer - #VU159654
Published: November 6, 2026
Vulnerability identifier: #VU159654
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: N/A
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an unauthenticated remote attacker to execute arbitrary JavaScript in a victim's Safari browser through cross-site scripting.
The vulnerability exists due to SVG Sanitizer failing to sanitize javascript: URLs in the values attribute of animateTransform elements that Safari permits to modify link destinations. An unauthenticated remote attacker can upload a crafted SVG file and trigger script execution when a victim using Safari clicks its link after the animation changes the destination.
Affected software
SVG Sanitizer
Remediation
Install security update from vendor's website.
SVG Sanitizer - update to 1.1.0