CVE detail
CVE-2026-16383
Mitigation bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 17.9 · diversity 10.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 5
- within the 30d window
- Peak daily
- 5
- highest bucket
Evidence
Source links by recency
5 source links · newest first
- https://www.mozilla.org/security/advisories/mfsa2026-72/www.mozilla.org
No excerpt available.
Vendor Advisorywww.mozilla.orgJul 21, 2026, 1:17 PM - https://www.mozilla.org/security/advisories/mfsa2026-71/www.mozilla.org
No excerpt available.
Vendor Advisorywww.mozilla.orgJul 21, 2026, 1:17 PM - https://www.mozilla.org/security/advisories/mfsa2026-70/www.mozilla.org
No excerpt available.
Vendor Advisorywww.mozilla.orgJul 21, 2026, 1:17 PM - https://www.mozilla.org/security/advisories/mfsa2026-68/www.mozilla.org
No excerpt available.
Vendor Advisorywww.mozilla.orgJul 21, 2026, 1:17 PM - https://bugzilla.mozilla.org/show_bug.cgi?id=2041902bugzilla.mozilla.org
No excerpt available.
Exploitbugzilla.mozilla.orgJul 21, 2026, 1:17 PM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
Related records
Similar CVEs
6 related CVEs with shared weakness or product evidence
- CVE-2026-16407CVSS 9.8 · Critical
Mitigation bypass in the DOM: Service Workers component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
- CVE-2026-16390CVSS 9.1 · Critical
Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
- CVE-2026-16388CVSS 9.8 · Critical
Sandbox escape in the DOM: Networking component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
- CVE-2026-16382CVSS 9.8 · Critical
Mitigation bypass in the DOM: Service Workers component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
- CVE-2026-16380CVSS 9.1 · Critical
Mitigation bypass in the Networking component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
- CVE-2026-16377CVSS 9.8 · Critical
Mitigation bypass in the PDF Viewer component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.