Cross-site scripting in SVG Sanitizer - #VU146561
Published: September 1, 2026
Vulnerability identifier: #VU146561
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/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 a remote user to disclose sensitive information through css injection and external resource loading.
The vulnerability exists due to improper neutralization of css content in <style> elements in the SVG Sanitizer when processing sanitized inline SVG content. A remote user can embed crafted css with @import, external url(), or selector-based exfiltration logic to disclose sensitive information through css injection and external resource loading.
This applies only when the sanitized SVG is embedded inline in a host page, and user interaction is required.
Affected software
SVG Sanitizer
Remediation
Install security update from vendor's website.
SVG Sanitizer - update to 1.0.0