Medium severity6.1OSV Advisory· Published Mar 24, 2020· Updated Jun 17, 2026
CVE-2020-6816
CVE-2020-6816
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
bleachPyPI | < 3.1.2 | 3.1.2 |
Affected products
70.1.2, 0.2.0, 0.2.1, …+ 1 more
- (no CPE)range: 0.1.2, 0.2.0, 0.2.1, …
- cpe:2.3:a:mozilla:bleach:*:*:*:*:*:*:*:*range: <3.1.2
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- ghsa-coords4 versionspkg:pypi/bleachpkg:rpm/opensuse/python-bleach&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/python-bleach&distro=openSUSE%20Tumbleweedpkg:rpm/suse/python-bleach&distro=SUSE%20Package%20Hub%2015%20SP2
< 3.1.2+ 3 more
- (no CPE)range: < 3.1.2
- (no CPE)range: < 3.1.5-lp152.2.3.1
- (no CPE)range: < 6.1.0-1.5
- (no CPE)range: < 3.1.5-bp152.2.4.1
Patches
Vulnerability mechanics
References
9- advisory.checkmarx.net/advisory/CX-2020-4277nvdExploitThird Party AdvisoryWEB
- www.checkmarx.com/blog/vulnerabilities-discovered-in-mozilla-bleachnvdExploitThird Party AdvisoryWEB
- github.com/advisories/GHSA-m6xf-fq7q-8743ghsaADVISORY
- github.com/mozilla/bleach/security/advisories/GHSA-m6xf-fq7q-8743nvdThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2020-6816ghsaADVISORY
- github.com/mozilla/bleach/releases/tag/v3.1.2ghsaWEB
- github.com/pypa/advisory-database/tree/main/vulns/bleach/PYSEC-2020-28.yamlghsaWEB
- lists.fedoraproject.org/archives/list/[email protected]/message/EDQU2SZLZMSSACCBUBJ6NOSRNNBDYFW5ghsaWEB
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EDQU2SZLZMSSACCBUBJ6NOSRNNBDYFW5/nvd
News mentions
0No linked articles in our index yet.