CVE-2020-6816
MEDIUMMozilla Bleach < 3.1.2 - Cross-Site Scripting via RCDATA with SVG or Math Tags
Title source: llmDescription
In Mozilla Bleach before 3.12, a mutation XSS in bleach.clean when RCDATA and either svg or math tags are whitelisted and the keyword argument strip=False.
References (4)
Core 4
Core References
Third Party Advisory x_refsource_misc
https://github.com/mozilla/bleach/security/advisories/GHSA-m6xf-fq7q-8743
Exploit, Third Party Advisory x_refsource_misc
https://www.checkmarx.com/blog/vulnerabilities-discovered-in-mozilla-bleach
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EDQU2SZLZMSSACCBUBJ6NOSRNNBDYFW5/
Exploit, Third Party Advisory x_refsource_misc
https://advisory.checkmarx.net/advisory/CX-2020-4277
Scores
CVSS v3
6.1
EPSS
0.0042
EPSS Percentile
62.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Details
CWE
CWE-79
Status
published
Products (3)
fedoraproject/fedora
33
mozilla/bleach
< 3.1.2
pypi/bleach
0 - 3.1.2PyPI
Published
Mar 24, 2020
Tracked Since
Feb 18, 2026