CVE-2020-6806
Mozilla: BodyStream:: OnInputStreamReady was missing protections against state confusion
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · March 10, 2020
Updated · November 22, 2025
Description
The Mozilla Foundation Security Advisory describes this flaw as:
By carefully crafting promise resolutions, it was possible to cause an out-of-bounds read off the end of an array resized during script execution. This could have led to memory corruption and a potentially exploitable crash.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-125 · Out-of-bounds Read