CVE-2026-100798

Awaiting Analysis Awaiting Analysis - Queue

Cryptography Misuse in Firefox Storage Quota Manager

Publication date: 2026-09-29

Last updated on: 2026-10-01

Assigner: Mozilla Corporation

Description

Cryptography misuse in Storage: Quota Manager component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-09-29

Last Modified

2026-10-01

Generated

2026-10-19

AI Q&A

2026-09-29

EPSS Evaluated

2026-10-18

NVD

CVE-2026-100798

EUVD

EUVD-2026-88951

Affected Vendors & Products

Vendor	Product	Version / Range
mozilla	firefox	to 153.4 (inc)
mozilla	firefox	to 157 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-325	The product does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than advertised by the algorithm.

Attack-Flow Graph

Executive Summary

This vulnerability involves cryptography misuse in the Storage: Quota Manager component of Firefox. It was addressed in Firefox ESR 153.4 and Firefox 157.

Impact Analysis

The misuse of cryptography could lead to unauthorized access or data breaches, potentially exposing sensitive information stored in the browser.

Compliance Impact

The provided CVE data does not specify how this vulnerability impacts compliance with standards like GDPR or HIPAA. The description only mentions cryptography misuse in the Storage: Quota Manager component without detailing potential regulatory consequences.

Mitigation Strategies

Update Firefox ESR to version 153.4 or Firefox to version 157 or later to address the cryptography misuse in the Storage: Quota Manager component.

Hi! I’m here to help you understand CVE-2026-100798. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70