CVEvulnerability

CVE-2026-8389

8.8 HIGH Published 2026-05-12 Modified 2026-10-26 Official page ↗

Status: Modified
Published: 2026-05-12
Last modified: 2026-10-26
Assigner: [email protected]
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0): 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c): 7.5 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses: CWE-119, CWE-686, CWE-733, CWE-843

Description

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

Affected configurations

• mozilla firefox (< 150.0.3)

Related

Weakness · CWE (4)

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer weakness
CWE-686 Function Call With Incorrect Argument Type weakness
CWE-733 Compiler Optimization Removal or Modification of Security-critical Code weakness
CWE-843 Access of Resource Using Incompatible Type weakness

References

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