CVE-2026-8391 - Vulnerability Details - OpenCVE

Other issue in the JavaScript Engine component. This vulnerability was fixed in Firefox 150.0.3.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable yes

Technical Impact partial

Vendors	Products
Mozilla	Firefox

Configuration 1 [-]

cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*

No data.

References

Link	Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=2038575
https://www.mozilla.org/security/advisories/mfsa2026-45/

History

Wed, 13 May 2026 19:15:00 +0000

Type	Values Removed	Values Added
Weaknesses	CWE-94

Wed, 13 May 2026 17:30:00 +0000

Type	Values Removed	Values Added
CPEs		cpe:2.3:a:mozilla:firefox:::::-:::*

Wed, 13 May 2026 16:15:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-119 CWE-20
Metrics		cvssV3_1 `{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}` ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

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

Type	Values Removed	Values Added
Weaknesses		CWE-79 CWE-94

Tue, 12 May 2026 15:00:00 +0000

Type	Values Removed	Values Added
First Time appeared		Mozilla Mozilla firefox
Vendors & Products		Mozilla Mozilla firefox

Tue, 12 May 2026 13:30:00 +0000

Type	Values Removed	Values Added
Description		Other issue in the JavaScript Engine component. This vulnerability was fixed in Firefox 150.0.3.
Title		Other issue in the JavaScript Engine component
References		https://bugzilla.mozilla.org/show_bug.cgi?id=2038575 https://www.mozilla.org/security/advisories/mfsa2026-45/

MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2026-05-12T12:36:15.548Z

Updated: 2026-05-13T15:47:30.418Z

Reserved: 2026-05-12T12:36:14.816Z

Link: CVE-2026-8391

Vulnrichment

Updated: 2026-05-13T15:47:13.828Z

NVD

Status : Analyzed

Published: 2026-05-12T14:17:12.173

Modified: 2026-05-13T17:22:51.043

Link: CVE-2026-8391

Redhat

No data.

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