Medium severity6.1NVD Advisory· Published Dec 8, 2021· Updated Jun 17, 2026

CVE-2021-43530

Description

A Universal XSS vulnerability was present in Firefox for Android resulting from improper sanitization when processing a URL scanned from a QR code. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 94.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Mozilla Corporation/Firefox for Androidllm-fuzzy
Range: < 94
Mozilla Corporation/Firefoxv5
Range: unspecified

Patches

Vulnerability mechanics

References

www.mozilla.org/security/advisories/mfsa2021-48/nvdVendor Advisory
bugzilla.mozilla.org/show_bug.cginvdIssue TrackingPermissions Required

News mentions

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cvss	0.397
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000