CVE-2026-8389

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 150.0.3.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

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
https://access.redhat.com/security/cve/CVE-2026-8389
https://bugzilla.redhat.com/show_bug.cgi?id=2476466
https://github.com/crixpwn/CVE-2026-8389
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8389.json

Configurations

Configuration 1 (hide)

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

History

26 Oct 2026, 18:10

Type	Values Removed	Values Added
Summary		(es) Compilación errónea JIT en el motor javascript_disabled: componente JIT. Esta vulnerabilidad se corrigió en Firefox 150.0.3.

Information

Published : 2026-05-12 14:17

Updated : 2026-10-26 18:10

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')

CWE-733

Compiler Optimization Removal or Modification of Security-critical Code

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