CVE-2026-109756 - Vulnerability Details - OpenCVE

Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Mozilla

Firefox

affected

Version	Status	Constraints
`153.5`	unaffected	≤ 153.*
`158`	unaffected	≤ *

No data.

No data.

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=2069258
https://www.mozilla.org/security/advisories/mfsa2026-106/
https://www.mozilla.org/security/advisories/mfsa2026-108/

History

Tue, 13 Oct 2026 15:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-269
Metrics		cvssV3_1 `{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Tue, 13 Oct 2026 13:00:00 +0000

Type	Values Removed	Values Added
Description		Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5.
Title		Privilege escalation in the DOM: Navigation component
References		https://bugzilla.mozilla.org/show_bug.cgi?id=2069258 https://www.mozilla.org/security/advisories/mfsa2026-106/ https://www.mozilla.org/security/advisories/mfsa2026-108/

Projects

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MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2026-10-13T12:29:30.297Z

Updated: 2026-10-13T14:20:59.951Z

Reserved: 2026-10-13T00:30:00.327Z

Link: CVE-2026-109756

Vulnrichment

Updated: 2026-10-13T14:20:49.247Z

NVD

Status : Deferred

Published: 2026-10-13T13:17:26.530

Modified: 2026-10-13T16:19:16.897

Link: CVE-2026-109756

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-269

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