🔐 CVE Alert

CVE-2026-16381

UNKNOWN 0.0

Same-origin policy bypass in the Networking: DNS component

CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th

Same-origin policy bypass in the Networking: DNS component. This vulnerability was fixed in Firefox 153 and Firefox ESR 140.13.

Vendor mozilla
Product firefox
Ecosystems
Industries
Technology
Published Jul 21, 2026
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Affected Versions

Mozilla / Firefox
All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗
bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=2041001 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-68/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-70/

Credits

Rintaro Kawasugi