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CVE Vulnerability Details :

CVE-2026-2804

PUBLISHED

More Info Official Page

Assigner-mozilla

Assigner Org ID-f16b083a-5664-49f3-a51e-8d479e5ed7fe

Published At-24 Feb, 2026 | 13:33

Updated At-24 Feb, 2026 | 17:30

▼CVE Numbering Authority (CNA)

Use-after-free in the JavaScript: WebAssembly component

Use-after-free in the JavaScript: WebAssembly component. This vulnerability affects Firefox < 148 and Thunderbird < 148.

Affected Products

Vendor

Mozilla Corporation

Product

Firefox

Versions

Affected

From unspecified before 148 (custom)

Vendor

Mozilla Corporation

Product

Thunderbird

Versions

Affected

From unspecified before 148 (custom)

Credits

Information to follow

References

Hyperlink	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=2013584	N/A
https://www.mozilla.org/security/advisories/mfsa2026-13/	N/A
https://www.mozilla.org/security/advisories/mfsa2026-16/	N/A

Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=2013584

Resource: N/A

Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-13/

Resource: N/A

Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-16/

Resource: N/A

▼Authorized Data Publishers (ADP)

CISA ADP Vulnrichment

Problem Types

Type	CWE ID	Description
CWE	CWE-416	CWE-416 Use After Free

Type: CWE

CWE ID: CWE-416

Description: CWE-416 Use After Free

Metrics

Version	Base score	Base severity	Vector
3.1	5.4	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Version: 3.1

Base score: 5.4

Base severity: MEDIUM

Vector:

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Affected Products

Affected

Affected

Metrics

Metrics Other Info

Impacts

Solutions

Configurations

Workarounds

Exploits

Credits

Timeline

Replaced By

Rejected Reason

References

Affected Products

Problem Types

Metrics

Metrics Other Info

Impacts

Solutions

Configurations

Workarounds

Exploits

Credits

Timeline

Replaced By

Rejected Reason

References