Medium severity6.5NVD Advisory· Published Feb 26, 2021· Updated Jun 17, 2026
CVE-2021-23958
CVE-2021-23958
Description
The browser could have been confused into transferring a screen sharing state into another tab, which would leak unintended information. This vulnerability affects Firefox < 85.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
5< 85+ 2 more
- (no CPE)range: < 85
- (no CPE)range: <85
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*range: <85.0
- osv-coords2 versionspkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweed
< 128.5.1-1.1+ 1 more
- (no CPE)range: < 128.5.1-1.1
- (no CPE)range: < 92.0-1.2
Patches
Vulnerability mechanics
References
2- bugzilla.mozilla.org/show_bug.cginvdIssue TrackingPermissions RequiredVendor Advisory
- www.mozilla.org/security/advisories/mfsa2021-03/nvdRelease NotesVendor Advisory
News mentions
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