Mitigation bypass in the DOM: Security component_CVE-2026-12315

9.1 / 10

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Description

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

AI Analysis

Mitigation bypass vulnerability in the DOM: Security component

Basic Information

ID CVE-2026-12315

Source mozilla

Published Jun 16, 2026 at 11:52

Modified Jun 16, 2026 at 18:26

Affected Product

Vendor Mozilla

Product Firefox

Version 140.12

CWE Classification

CWE-693

AI Assessment

AI Score 9.1 / 10

AI Severity Critical

Vendor Mozilla Foundation

Product Firefox

Version 140.12, 152

References

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    "published": "2026-06-16T11:52:48.735Z",
    "modified": "2026-06-16T18:26:13.133Z",
    "type": "cve",
    "title": "Mitigation bypass in the DOM: Security component",
    "source": "mozilla",
    "references": "https://bugzilla.mozilla.org/show_bug.cgi?id=2042058\nhttps://www.mozilla.org/security/advisories/mfsa2026-57/\nhttps://www.mozilla.org/security/advisories/mfsa2026-58/\nhttps://www.mozilla.org/security/advisories/mfsa2026-60/\nhttps://www.mozilla.org/security/advisories/mfsa2026-61/",
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        "version": "3.1"
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    "product": "Firefox",
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    "ai_description": "Mitigation bypass vulnerability in the DOM: Security component",
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