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Advisories

HtmlSanitizer before 9.2.1039 XSS via SanitizeDom Body and HTML Attributes

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Severity
low
Date
Affecting

  • HtmlSanitizer >= 0, < 9.2.1039

  • HtmlSanitizer >= 10.0.0-beta, < 10.0.1037-beta

CWE
  • CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSS
2.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Credit
Joshua Rogers
Description
HtmlSanitizer before 9.2.1039 and 10.0 prereleases before 10.0.1037-beta contains a cross-site scripting vulnerability because SanitizeDom(string) never sanitizes attributes on the html and body wrapper elements. Attackers can supply input with a second body or html tag carrying event handlers like onload, executing script when applications render serialized document or body outer HTML.

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