CVE-2026-8389

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-8389
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 150.0.3.

7.3 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References
Link Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=2036983 Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-45/ Vendor Advisory
Configurations

Configuration 1 (hide)

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

13 May 2026, 17:23

Type Values Removed Values Added
First Time Mozilla
Mozilla firefox
CPE cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
CWE CWE-119
CWE-686
CWE-843
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.3
References () https://bugzilla.mozilla.org/show_bug.cgi?id=2036983 - () https://bugzilla.mozilla.org/show_bug.cgi?id=2036983 - Permissions Required
References () https://www.mozilla.org/security/advisories/mfsa2026-45/ - () https://www.mozilla.org/security/advisories/mfsa2026-45/ - Vendor Advisory

12 May 2026, 14:20

Type Values Removed Values Added
New CVE
Information

Published : 2026-05-12 14:17

Updated : 2026-05-13 17:23

NVD link : CVE-2026-8389

Mitre link : CVE-2026-8389

CVE.ORG link : CVE-2026-8389

JSON object : View

Products Affected

mozilla

  • firefox
CWE
CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-686

Function Call With Incorrect Argument Type

CWE-843

Access of Resource Using Incompatible Type ('Type Confusion')