CVE-2026-92015 - Vulnerability Details - OpenCVE

Privilege escalation in the WebExtensions component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, and Firefox ESR 153.3.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

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
`115.41`	unaffected	≤ 115.*
`140.16`	unaffected	≤ 140.*
`153.3`	unaffected	≤ 153.*
`156`	unaffected	≤ *

No data.

No data.

No data.

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=2060235
https://www.mozilla.org/security/advisories/mfsa2026-90/
https://www.mozilla.org/security/advisories/mfsa2026-91/
https://www.mozilla.org/security/advisories/mfsa2026-92/
https://www.mozilla.org/security/advisories/mfsa2026-93/

History

Tue, 15 Sep 2026 12:45:00 +0000

Type	Values Removed	Values Added
Description		Privilege escalation in the WebExtensions component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, and Firefox ESR 153.3.
Title		Privilege escalation in the WebExtensions component
References		https://bugzilla.mozilla.org/show_bug.cgi?id=2060235 https://www.mozilla.org/security/advisories/mfsa2026-90/ https://www.mozilla.org/security/advisories/mfsa2026-91/ https://www.mozilla.org/security/advisories/mfsa2026-92/ https://www.mozilla.org/security/advisories/mfsa2026-93/

Projects

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MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2026-09-15T12:33:34.965Z

Updated: 2026-09-15T13:46:16.003Z

Reserved: 2026-09-15T12:33:34.461Z

Link: CVE-2026-92015

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-09-15T13:16:51.100

Modified: 2026-09-15T13:16:51.100

Link: CVE-2026-92015

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

No weakness.

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