CVE-2026-74972

Analyzed Analyzed - Analysis Complete

Information Disclosure in Firefox DOM Push Subscriptions

Publication date: 2026-08-18

Last updated on: 2026-08-19

Assigner: Mozilla Corporation

Description

Information disclosure in the DOM: Push Subscriptions component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-18

Last Modified

2026-08-19

Generated

2026-09-07

AI Q&A

2026-08-18

EPSS Evaluated

2026-09-06

NVD

CVE-2026-74972

EUVD

EUVD-2026-60667

Affected Vendors & Products

Vendor	Product	Version / Range
mozilla	firefox	From 141.0 (inc) to 153.1.0 (exc)
mozilla	thunderbird	From 141.0 (inc) to 153.1.0 (exc)
mozilla	thunderbird	to 140.14.0 (exc)
mozilla	firefox	to 140.14.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-200	The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Attack-Flow Graph

Executive Summary

This vulnerability involves information disclosure in the DOM Push Subscriptions component of Firefox browsers. It was patched in Firefox 154, Firefox ESR 140.14, and Firefox ESR 153.1.

Detection Guidance

This vulnerability is specific to Firefox and Firefox ESR versions before 154, 140.14, and 153.1 respectively. Detection involves checking installed versions of Firefox or Firefox ESR. Use commands like 'firefox --version' or 'firefox-esr --version' to verify versions. If versions are below the patched releases, the system is vulnerable.

Impact Analysis

An attacker could exploit this flaw to access sensitive information stored in push subscriptions, potentially leading to unauthorized data exposure or privacy breaches.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR or HIPAA due to unauthorized data exposure, potentially resulting in legal penalties or reputational damage.

Mitigation Strategies

Update Firefox to version 154 or later, Firefox ESR to version 140.14 or later, or Firefox ESR to version 153.1 or later to address the information disclosure vulnerability in the DOM Push Subscriptions component.

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