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CVE Vulnerability Details :

CVE-2026-8963

PUBLISHED

More Info Official Page

Assigner-mozilla

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

Published At-19 May, 2026 | 12:30

Updated At-19 May, 2026 | 17:10

▼CVE Numbering Authority (CNA)

Spoofing issue in the Web Speech component

Spoofing issue in the Web Speech component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

Affected Products

Vendor

Mozilla Corporation

Product

Firefox

Versions

Unaffected

From 151 through * (rpm)

Vendor

Mozilla Corporation

Product

Thunderbird

Versions

Unaffected

From 151 through * (rpm)

Credits

Qadhafy Muhammad Tera

References

Hyperlink	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=2021222	N/A
https://www.mozilla.org/security/advisories/mfsa2026-46/	N/A
https://www.mozilla.org/security/advisories/mfsa2026-50/	N/A

Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=2021222

Resource: N/A

Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-46/

Resource: N/A

Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-50/

Resource: N/A

▼Authorized Data Publishers (ADP)

CISA ADP Vulnrichment

Problem Types

Type	CWE ID	Description
CWE	CWE-290	CWE-290 Authentication Bypass by Spoofing

Type: CWE

CWE ID: CWE-290

Description: CWE-290 Authentication Bypass by Spoofing

Metrics

Version	Base score	Base severity	Vector
3.1	7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Version: 3.1

Base score: 7.5

Base severity: HIGH

Vector:

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

Affected Products

Unaffected

Unaffected

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