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Advisories

svg-sanitizer 0.5.0 before 1.1.0 Incomplete url() Filtering in SVG Attributes

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Severity
medium
Date
Affecting

  • svg-sanitizer >= 0.5.0, < 1.1.0

CWE
  • CWE-791 Incomplete Filtering of Special Elements
CVSS
5.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Credit
Rudloff, AlpetGexha
Description
svg-sanitizer from 0.5.0 before 1.1.0 contains an incomplete filtering vulnerability that allows attackers to bypass remote URL removal by using CSS escape sequences inside url() in SVG presentation attributes. Attackers can supply SVG files with attributes like fill containing escaped slashes that browsers resolve to remote URLs, triggering external requests and enabling data exfiltration.

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