CVE-2026-100823

Spoofing issue in the Downloads component in Firefox for Android

Mozilla FirefoxApplications & CMS

CVSS

5.4Medium

ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV

Exploit odds (EPSS)0.15%Chance of exploitation activity in the next 30 days, higher than 3% of CVEs. Scored 23 Oct 2026FIRST EPSS

Fixed inNone listedNo source names a fixed version. Check the vendor advisory below

Published29 Sep 2026Updated 1 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Spoofing issue in the Downloads component in Firefox for Android. This vulnerability was fixed in Firefox 157.

Text from CVE List