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NVD Vulnerability Details :

CVE-2026-8946

Undergoing Analysis

Source-security@mozilla.org

Published At-19 May, 2026 | 14:16

Updated At-19 May, 2026 | 15:16

Incorrect boundary conditions in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, and Firefox ESR 140.11.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

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

Type: Secondary

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:H/I:N/A:N

Weaknesses

CWE ID	Type	Source
CWE-119	Secondary	134c704f-9b21-4f2e-91b3-4a467353bcc0

CWE ID: CWE-119

Type: Secondary

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

References

Hyperlink	Source	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=2029070	security@mozilla.org	N/A
https://www.mozilla.org/security/advisories/mfsa2026-46/	security@mozilla.org	N/A
https://www.mozilla.org/security/advisories/mfsa2026-47/	security@mozilla.org	N/A
https://www.mozilla.org/security/advisories/mfsa2026-48/	security@mozilla.org	N/A