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NVD Vulnerability Details :
CVE-2026-8964
Undergoing Analysis
More InfoOfficial Page
Source-security@mozilla.org
View Known Exploited Vulnerability (KEV) details
Published At-19 May, 2026 | 14:16
Updated At-19 May, 2026 | 18:16

Spoofing issue in the Popup Blocker component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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:N/I:H/A:N
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-451Secondary134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE ID: CWE-451
Type: Secondary
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://bugzilla.mozilla.org/show_bug.cgi?id=2025170security@mozilla.org
N/A
https://www.mozilla.org/security/advisories/mfsa2026-46/security@mozilla.org
N/A
https://www.mozilla.org/security/advisories/mfsa2026-50/security@mozilla.org
N/A
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=2025170
Source: security@mozilla.org
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-46/
Source: security@mozilla.org
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-50/
Source: security@mozilla.org
Resource: N/A
Change History
0Changes found
Details not found