PYSEC-2021-865

vendorUSosv

view advisory published 2021-02-02Licence: CC-BY-4.0

In Mozilla Bleach before 3.3.0, a mutation XSS affects users calling bleach.clean with math or svg; p or br; and style, title, noscript, script, textarea, noframes, iframe, or xmp tags with strip_comments=False.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2021-23980US	medium6.1	0.48% (41st)	—	2023-02-16
A mutation XSS affects users calling bleach.clean with all of: svg or math in the allowed tags p or br in allowed tags style, title, noscript, script, textarea, noframes, iframe, o…

references

External citations — patches, advisories, analysis.

https://advisory.checkmarx.net/advisory/CX-2021-4303ADVISORY
https://github.com/mozilla/bleach/commit/79b7a3c5e56a09d1d323a5006afa59b56162eb13FIX
https://github.com/mozilla/bleach/security/advisories/GHSA-vv2x-vrpj-qqpqADVISORY

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