CVE-2026-8390

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

CVSS v3 7.3 HIGH

7.3^/10

CVSS v3 : HIGH

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=2038081	Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-45/	Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-8390
https://bugzilla.redhat.com/show_bug.cgi?id=2476474
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8390.json

Configurations

Configuration 1 (hide)

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

History

30 Jun 2026, 03:21

Type	Values Removed	Values Added
CWE		CWE-825
References		() https://access.redhat.com/security/cve/CVE-2026-8390 - () https://bugzilla.redhat.com/show_bug.cgi?id=2476474 - () https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8390.json -

14 May 2026, 18:53

Type	Values Removed	Values Added
First Time		Mozilla Mozilla firefox
CPE		cpe:2.3:a:mozilla:firefox:::::-:::*
References	~~() https://bugzilla.mozilla.org/show_bug.cgi?id=2038081 -~~	() https://bugzilla.mozilla.org/show_bug.cgi?id=2038081 - Permissions Required
References	~~() https://www.mozilla.org/security/advisories/mfsa2026-45/ -~~	() https://www.mozilla.org/security/advisories/mfsa2026-45/ - Vendor Advisory

13 May 2026, 19:17

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.3
CWE		CWE-416

12 May 2026, 14:20

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-12 14:17

Updated : 2026-07-15 01:17

NVD link : CVE-2026-8390

Mitre link : CVE-2026-8390

CVE.ORG link : CVE-2026-8390

JSON object : View

Products Affected

mozilla

firefox

CWE

CWE-416

Use After Free

CWE-825

Expired Pointer Dereference

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