CVE detail
CVE-2026-16398
Site isolation issue in the Graphics component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
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 13.9 · diversity 10.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 3
- within the 30d window
- Peak daily
- 3
- highest bucket
Evidence
Source links by recency
3 source links · newest first
- 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/mfsa2026-68/www.mozilla.org
No excerpt available.
Vendor Advisorywww.mozilla.orgJul 21, 2026, 1:17 PM - https://bugzilla.mozilla.org/show_bug.cgi?id=2048345bugzilla.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-2026-16387CVSS 9.8 · Critical
Site isolation issue in the Networking component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
- CVE-2026-15075CVSS 8.2 · High
In Eclipse Vert.x versions up to and including 4.5.29 (4.x branch) and 5.1.4 (5.x branch), DefaultRedirectHandler (vertx-core) propagates all request headers as-is across cross-or…
- CVE-2025-68467CVSS 3.4 · Low
Dark Reader is an accessibility browser extension that makes web pages colors dark. The dynamic dark mode feature of the extension works by analyzing the colors of web pages found…
- CVE-2023-5718CVSS 4.3 · Medium
The Vue.js Devtools extension was found to leak screenshot data back to a malicious web page via the standard `postMessage()` API. By creating a malicious web page with an iFrame…
- CVE-2022-24762CVSS 6.5 · Medium
sysend.js is a library that allows a user to send messages between pages that are open in the same browser. Users that use cross-origin communication may have their communications…
- CVE-2022-21712CVSS 7.5 · High
twisted is an event-driven networking engine written in Python. In affected versions twisted exposes cookies and authorization headers when following cross-origin redirects. This…