Medium severity6.5NVD Advisory· Published Dec 9, 2020· Updated Jun 17, 2026
CVE-2020-26967
CVE-2020-26967
Description
When listening for page changes with a Mutation Observer, a malicious web page could confuse Firefox Screenshots into interacting with elements other than those that it injected into the page. This would lead to internal errors and unexpected behavior in the Screenshots code. This vulnerability affects Firefox < 83.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
6< 83+ 2 more
- (no CPE)range: < 83
- (no CPE)range: <83
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*range: <83.0
- Range: <83
- 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/mfsa2020-50/nvdVendor Advisory
News mentions
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