Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150.0.3.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

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

Affected Vendors & Products

Vendors Products
Mozilla
  • Firefox

No data.

No data.

References
Link Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=2038081 cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-45/ cve-icon cve-icon
History

Wed, 13 May 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'}

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-416

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 Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150.0.3.
Title Use-after-free in the JavaScript: WebAssembly component
References
cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-05-13T18:30:14.904Z

Reserved: 2026-05-12T12:36:13.277Z

Link: CVE-2026-8390

cve-icon Vulnrichment

Updated: 2026-05-13T18:30:05.899Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-05-12T14:17:12.050

Modified: 2026-05-13T19:17:30.380

Link: CVE-2026-8390

cve-icon Redhat

No data.