Medium severity6.5NVD Advisory· Published Mar 31, 2021· Updated Jun 17, 2026
CVE-2021-23983
CVE-2021-23983
Description
By causing a transition on a parent node by removing a CSS rule, an invalid property for a marker could have been applied, resulting in memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 87.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
5unspecified+ 2 more
- (no CPE)range: unspecified
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*range: <87.0
- (no CPE)range: <87
- osv-coords2 versionspkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweed
< 92.0-1.2+ 1 more
- (no CPE)range: < 92.0-1.2
- (no CPE)range: < 128.5.1-1.1
Patches
Vulnerability mechanics
References
2- bugzilla.mozilla.org/show_bug.cginvdIssue TrackingPermissions RequiredVendor Advisory
- www.mozilla.org/security/advisories/mfsa2021-10/nvdVendor Advisory
News mentions
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