Name: CVE-2026-109772: Undefined Security Weakness
Creator: Rapid7
Published: 2026-10-13T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-109772, EPSS 0.00157

Same-origin policy bypass in the DevTools component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Mfsa2026 106	—	Upgrade to Mozilla Firefox version 158.0Upgrade to the latest version of Mozilla Firefox	Oct 13, 2026	Oct 13, 2026
Mozilla Thunderbird	—	Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 158.0	Oct 13, 2026	Oct 13, 2026

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Covered by Rapid7

Prioritise with Active Threat Intelligence