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

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Mozilla Firefox affected
Version Status Constraints
151 unaffected ≤ *

No data.

No data.

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No data.

Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=2025170 cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-46/ cve-icon cve-icon
History

Tue, 19 May 2026 15:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-1021
CWE-200

Tue, 19 May 2026 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-451
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 19 May 2026 13:45:00 +0000

Type Values Removed Values Added
Description Spoofing issue in the Popup Blocker component. This vulnerability was fixed in Firefox 151.
Title Spoofing issue in the Popup Blocker component
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-05-19T15:00:48.758Z

Reserved: 2026-05-19T12:30:07.287Z

Link: CVE-2026-8964

cve-icon Vulnrichment

Updated: 2026-05-19T14:59:14.349Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-05-19T14:16:52.823

Modified: 2026-05-19T14:23:47.477

Link: CVE-2026-8964

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-19T15:30:08Z

Weaknesses