CVE-2020-26963

MEDIUM 4.3CVE-2020-26963 · Published 09/12/2020 · updated 17/06/2026

In short

CVE-2020-26963 is a MEDIUM (CVSS 4.3) vulnerability affecting firefox (mozilla).
Chance of exploitation in the next 30 days (EPSS): 0.85%, higher than 58.2% of all vulnerabilities.
Fix: update to 83.0 or later.

Package	Affected versions	Patched versions
firefox mozilla	`< 83.0`	`83.0`

Description

Repeated calls to the history and location interfaces could have been used to hang the browser. This was addressed by introducing rate-limiting to these API calls. This vulnerability affects Firefox < 83.

References

bugzilla.mozilla.org/show_bug.cgi · Issue Tracking
mozilla.org/security/advisories/mfsa2020-50 · Vendor Advisory

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Package

Affected versions

Patched versions

firefox

mozilla

< 83.0

83.0

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