CVE-2026-109746CWE-693

CVE-2026-109746

High · published October 13, 2026

CVSS v3.1
7.3
EPSS
0%
Percentile
21.5
In the wild
Unconfirmed
What it is

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.

The record
Technical detail
CVSS v3.1
7.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00300 · 21.5th percentile
Weakness
CWE-693 · Protection Mechanism Failure
Published
2026-10-13T17:17Z
References (3)
https://bugzilla.mozilla.org/show_bug.cgi?id=2063005 · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-106/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-109/ · [email protected]
EPSS history
Timeline
  • 15 OCT 03:28Z
    EPSS moved — → 0%
    epss
  • 13 OCT 12:29Z
    Mitigation bypass in the DOM: Security component
    cvelistv5
  • 13 OCT 12:29Z
    Mitigation bypass in the DOM: Security component
    cvelistv5