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Under certain conditions, when handling a ReadableStream,...

Moderate severity Unreviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Jan 27, 2023

Package

No package listedSuggest a package

Affected versions

Unknown

Patched versions

Unknown

Description

Under certain conditions, when handling a ReadableStream, a race condition can cause a use-after-free. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Thunderbird < 68.7.0, Firefox < 74.0.1, and Firefox ESR < 68.6.1.

References

Published by the National Vulnerability Database Apr 24, 2020
Published to the GitHub Advisory Database May 24, 2022
Last updated Jan 27, 2023

Severity

Moderate

EPSS score

0.891%
(83rd percentile)

CVE ID

CVE-2020-6820

GHSA ID

GHSA-f77r-rqc9-53hh

Source code

No known source code

Dependabot alerts are not supported on this advisory because it does not have a package from a supported ecosystem with an affected and fixed version.

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