CVE-2023-6870 Affecting firefox-esr package, versions <121.0-r0


Severity

Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.38% (30th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-FIREFOXESR-17763974
  • published1 Jul 2026
  • disclosed19 Dec 2023

Introduced: 19 Dec 2023

CVE-2023-6870  (opens in a new tab)

How to fix?

Upgrade Chainguard firefox-esr to version 121.0-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox-esr package and not the firefox-esr package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

Applications which spawn a Toast notification in a background thread may have obscured fullscreen notifications displayed by Firefox. This issue only affects Android versions of Firefox and Firefox Focus. This vulnerability affects Firefox < 121.

CVSS Base Scores

version 3.1