All vulnerabilities
CVE-2026-100826

Firefox: Denial-of-service in the Storage: StorageManager component

Mozilla FirefoxApplications & CMS
Open in ThreatlineRecord JSON
CVSS
6.5Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.22%Chance of exploitation activity in the next 30 days, higher than 11% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published29 Sep 2026Updated 30 Sep 2026CVE List

What fixes it

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

Description

Denial-of-service in the Storage: StorageManager component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.

Text from CVE List

Affected versions 4

  • Firefoxunaffected: 153.4 through 153.*CVE List
  • Firefoxunaffected: 157CVE List
  • Thunderbirdunaffected: 153.4 through 153.*CVE List
  • Thunderbirdunaffected: 157CVE List

References 5