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CVE-2026-8389 Details

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

CVSS 3.x Severity and Vector Strings:

CNA: redhat-SADPCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

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URL	Source(s)	Tag(s)
https://access.redhat.com/security/cve/CVE-2026-8389	redhat-SADP
https://bugzilla.redhat.com/show_bug.cgi?id=2476466	redhat-SADP
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8389.json	redhat-SADP
https://github.com/crixpwn/CVE-2026-8389	CISA-ADP
https://bugzilla.mozilla.org/show_bug.cgi?id=2036983	[email protected]	Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-45/	[email protected]	Vendor Advisory

CWE-ID	CWE Name	Source
CWE-119	Improper Restriction of Operations within the Bounds of a Memory Buffer	CISA-ADP
CWE-686	Function Call With Incorrect Argument Type	CISA-ADP
CWE-733	Compiler Optimization Removal or Modification of Security-critical Code	redhat-SADP
CWE-843	Access of Resource Using Incompatible Type ('Type Confusion')	CISA-ADP

Product	Versions
mozilla firefox	< 150.0.3
CPE cpe:2.3:a:mozilla:firefox:::::-:::* Remediation No remediation found in references.

8 change records found show changes

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