CVE-2026-16374
Received Received - Intake

Information Disclosure in Firefox DevTools

Publication date: 2026-07-21

Last updated on: 2026-07-21

Assigner: Mozilla Corporation

Description
Information disclosure in the Framework component in DevTools. This vulnerability was fixed in Firefox 153 and Firefox ESR 140.13.

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Meta Information

Published
2026-07-21
Last Modified
2026-07-21
Generated
2026-07-21
AI Q&A
2026-07-21
EPSS Evaluated
N/A
NVD
CVE-2026-16374
EUVD
EUVD-2026-46210

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
mozilla firefox 153
mozilla firefox_esr 140.13

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability is an information disclosure issue in the Framework component of DevTools. It was patched in Firefox version 153 and Firefox ESR version 140.13.

Detection Guidance

Detection requires checking Firefox or Firefox ESR versions. Compare installed versions against Firefox 153 and Firefox ESR 140.13. Use commands like 'firefox --version' or 'apt show firefox-esr' to verify.

Impact Analysis

An attacker could exploit this to gain access to sensitive information through the DevTools Framework component. Users running unpatched versions of Firefox or Firefox ESR are at risk.

Mitigation Strategies

Update Firefox to version 153 or later and Firefox ESR to version 140.13 or later to address the information disclosure vulnerability in the Framework component.

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