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CVE-2020-26967 PUBLISHED

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.

EPSS 0.28% · 51.6th percentile

Risk Scores

EPSS Score
0.28%
51.6th percentile

Affected Products

VendorProductVersions
Ubuntu:20.04:LTSmozjs6868.5.0-2~fakesync, 68.5.0-1~fakesync, 0
Ubuntu:18.04:LTSmozjs5252.3.1-7fakesync1, 52.8.1-0ubuntu0.18.04.1, 52.9.1-0ubuntu0.18.04.1
Ubuntu:20.04:LTSfirefox72.0.1+build1-0ubuntu1, 72.0.2+build1-0ubuntu1, 73.0+build1-0ubuntu1
Ubuntu:16.04:LTSfirefox75.0+build3-0ubuntu0.16.04.1, 76.0+build2-0ubuntu0.16.04.1, 76.0.1+build1-0ubuntu0.16.04.1
Ubuntu:18.04:LTSfirefox82.0+build2-0ubuntu0.18.04.1, 0, 56.0+build6-0ubuntu1
Ubuntu:20.04:LTSmozjs520, 52.9.1-1build1, 52.9.1-1ubuntu3
Ubuntu:18.04:LTSmozjs3838.8.0~repack1-0ubuntu4, 0, 38.8.0~repack1-0ubuntu3

Timeline

References

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