CVE-2021-23974 PUBLISHED

The DOMParser API did not properly process '<noscript>' elements for escaping. This could be used as an mXSS vector to bypass an HTML Sanitizer. This vulnerability affects Firefox < 86.

EPSS 0.19% · 41.1th percentile

Risk Scores

EPSS Score
0.19%
41.1th percentile

Affected Products

VendorProductVersions
Ubuntu:20.04:LTSmozjs5252.9.1-1ubuntu3, 52.9.1-1build1, 0
Ubuntu:20.04:LTSfirefox84.0.2+build1-0ubuntu0.20.04.1, 84.0.1+build1-0ubuntu0.20.04.1, 84.0+build3-0ubuntu0.20.04.1
Ubuntu:18.04:LTSmozjs520, 52.3.1-7fakesync1, 52.3.1-0ubuntu3
Ubuntu:18.04:LTSfirefox71.0+build5-0ubuntu0.18.04.1, 0, 56.0+build6-0ubuntu1
Ubuntu:16.04:LTSfirefox60.0.1+build2-0ubuntu0.16.04.1, 59.0.2+build1-0ubuntu0.16.04.3, 59.0.2+build1-0ubuntu0.16.04.1
Ubuntu:20.04:LTSmozjs6868.6.0-1, 0, 68.5.0-1~fakesync
Ubuntu:18.04:LTSmozjs380, 38.8.0~repack1-0ubuntu1, 38.8.0~repack1-0ubuntu3
Ubuntu:22.04:LTSmozjs780, 78.15.0-4ubuntu1, 78.13.0-1

Timeline

References

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