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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
mganss HtmlSanitizer
Default version status: unaffected
0 to < 9.2.1039affected10.0.0-beta to < 10.0.1037-betaaffected
pkg:nuget/HtmlSanitizerReferences
- https://github.com/mganss/HtmlSanitizer/commit/96afbc818e64de7571ea17954a05d523e819c56f ↗
- https://github.com/mganss/HtmlSanitizer/commit/ab626e7a4f2893f7e9ec0a72779ae19c5ec439a7 ↗
- https://github.com/mganss/HtmlSanitizer/blob/v9.2.995/src/HtmlSanitizer/HtmlSanitizer.cs#L456-L465 ↗
- https://github.com/mganss/HtmlSanitizer/blob/v9.2.995/src/HtmlSanitizer/HtmlSanitizer.cs#L555-L583 ↗
- https://joshua.hu/htmlsanitizer-sanitizedom-body-html-attribute-bypass ↗
- https://github.com/mganss/HtmlSanitizer/releases/tag/v9.2.1039 ↗
- https://github.com/mganss/HtmlSanitizer/releases/tag/v10.0.1037-beta ↗
- https://github.com/mganss/HtmlSanitizer ↗
- https://www.vulncheck.com/advisories/htmlsanitizer-before-9.2.1039-xss-via-sanitizedom-body-and-html-attributes ↗