Same-origin policy bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, and Firefox ESR 153.1.

Metrics

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

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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=2050482 cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-74/ cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-76/ cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-77/ cve-icon
History

Tue, 18 Aug 2026 12:45:00 +0000

Type Values Removed Values Added
Description Same-origin policy bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, and Firefox ESR 153.1.
Title Same-origin policy bypass in the Networking: Cookies component
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-08-18T12:23:32.132Z

Reserved: 2026-08-17T11:58:28.953Z

Link: CVE-2026-74963

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses

No weakness.