CVE-2026-16374: Vulnerability in Mozilla Firefox
CVE-2026-16374 is an information disclosure vulnerability in the Framework component of Mozilla Firefox DevTools. It was addressed in Firefox 153 and Firefox ESR 140.13. The vulnerability has a high CVSS score of 7.5 and allows an attacker to gain unauthorized access to information. No known exploits in the wild have been reported. Mozilla has released official fixes in the specified versions.
AI Analysis
Technical Summary
This vulnerability involves information disclosure within the Framework component of Firefox DevTools, identified as CVE-2026-16374. It affects Firefox versions prior to 153 and Firefox ESR versions prior to 140.13. The issue was fixed in Firefox 153 and Firefox ESR 140.13. The CVSS 3.1 base score is 7.5, indicating a high severity with network attack vector, low attack complexity, no privileges required, no user interaction, and high confidentiality impact. Mozilla's security advisories confirm the fix and recommend updating to the patched versions.
Potential Impact
Successful exploitation of this vulnerability could lead to unauthorized disclosure of sensitive information from the Firefox DevTools Framework component. The confidentiality impact is high, but integrity and availability are not affected. There are no reports of active exploitation in the wild at this time.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 153 and Firefox ESR 140.13. Users and administrators should update affected Firefox installations to these versions or later to remediate the issue. No additional mitigation actions are required beyond applying the official updates.
CVE-2026-16374: Vulnerability in Mozilla Firefox
Description
CVE-2026-16374 is an information disclosure vulnerability in the Framework component of Mozilla Firefox DevTools. It was addressed in Firefox 153 and Firefox ESR 140.13. The vulnerability has a high CVSS score of 7.5 and allows an attacker to gain unauthorized access to information. No known exploits in the wild have been reported. Mozilla has released official fixes in the specified versions.
CVSS v3.1
Score 7.5high
Affected software
pkg:github/mozilla/firefox-esrRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves information disclosure within the Framework component of Firefox DevTools, identified as CVE-2026-16374. It affects Firefox versions prior to 153 and Firefox ESR versions prior to 140.13. The issue was fixed in Firefox 153 and Firefox ESR 140.13. The CVSS 3.1 base score is 7.5, indicating a high severity with network attack vector, low attack complexity, no privileges required, no user interaction, and high confidentiality impact. Mozilla's security advisories confirm the fix and recommend updating to the patched versions.
Potential Impact
Successful exploitation of this vulnerability could lead to unauthorized disclosure of sensitive information from the Firefox DevTools Framework component. The confidentiality impact is high, but integrity and availability are not affected. There are no reports of active exploitation in the wild at this time.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 153 and Firefox ESR 140.13. Users and administrators should update affected Firefox installations to these versions or later to remediate the issue. No additional mitigation actions are required beyond applying the official updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-07-20T21:56:36.642Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-68/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-70/","vendor":"Mozilla"}]
Threat ID: 6a5f6cbc2a4a8d598926256e
Added to database: 07/21/2026, 12:57:32 UTC
Last enriched: 07/30/2026, 10:40:03 UTC
Last updated: 08/28/2026, 22:52:08 UTC
Views: 70
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