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CVE-2021-23976 PUBLISHED

When accepting a malicious intent from other installed apps, Firefox for Android accepted manifests from arbitrary file paths and allowed declaring webapp manifests for other origins. This could be used to gain fullscreen access for UI spoofing and could also lead to cross-origin attacks on targeted websites. Note: This issue is a different issue from CVE-2020-26954 and only affected Firefox for Android. Other operating systems are unaffected. This vulnerability affects Firefox < 86.

EPSS 0.33% · 55.8th percentile

Risk Scores

EPSS Score
0.33%
55.8th percentile

Affected Products

VendorProductVersions
Ubuntu:18.04:LTSmozjs520, 52.3.1-0ubuntu3, 52.3.1-7fakesync1
Ubuntu:20.04:LTSmozjs6868.5.0-1~fakesync, 0, 68.5.0-2~fakesync
Ubuntu:18.04:LTSmozjs380, 38.8.0~repack1-0ubuntu4, 38.8.0~repack1-0ubuntu3
Ubuntu:22.04:LTSmozjs780, 78.13.0-1, 78.15.0-2
Ubuntu:20.04:LTSmozjs5252.9.1-1ubuntu3, 52.9.1-1build1, 0

Timeline

References

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