firefox: thunderbird: The WebCompat WebExtension shipped with Firefox exposed a persistent UUID

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser and persisted between containers and...

firefox: thunderbird: The WebCompat WebExtension shipped with Firefox exposed a persistent UUID

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser and persisted between containers and...

firefox: thunderbird: The WebCompat WebExtension shipped with Firefox exposed a persistent UUID

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser and persisted between containers and...

firefox: thunderbird: The WebCompat WebExtension shipped with Firefox exposed a persistent UUID

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser and persisted between containers and...

firefox: thunderbird: The WebCompat WebExtension shipped with Firefox exposed a persistent UUID

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser and persisted between containers and...

firefox: thunderbird: The WebCompat WebExtension shipped with Firefox exposed a persistent UUID

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser and persisted between containers and...

Mozilla Thunderbird < 140.0

The version of Thunderbird installed on the remote Windows host is prior to 140.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-54 advisory. - Memory safety bugs present in Firefox 139 and Thunderbird 139. Some of these bugs showed evidence of memory...

firefox: thunderbird: The WebCompat WebExtension shipped with Firefox exposed a persistent UUID

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser and persisted between containers and...

firefox: thunderbird: The WebCompat WebExtension shipped with Firefox exposed a persistent UUID

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser and persisted between containers and...

firefox: thunderbird: The WebCompat WebExtension shipped with Firefox exposed a persistent UUID

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser and persisted between containers and...

firefox: thunderbird: The WebCompat WebExtension shipped with Firefox exposed a persistent UUID

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser and persisted between containers and...

firefox: thunderbird: The WebCompat WebExtension shipped with Firefox exposed a persistent UUID

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser and persisted between containers and...

firefox: thunderbird: The WebCompat WebExtension shipped with Firefox exposed a persistent UUID

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser and persisted between containers and...

firefox: thunderbird: The WebCompat WebExtension shipped with Firefox exposed a persistent UUID

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser and persisted between containers and...

firefox: thunderbird: The WebCompat WebExtension shipped with Firefox exposed a persistent UUID

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser and persisted between containers and...

firefox: thunderbird: The WebCompat WebExtension shipped with Firefox exposed a persistent UUID

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser and persisted between containers and...

The vulnerability in the WebCompat extension of Mozilla browsers, including Mozilla Firefox and Firefox ESR, allows attackers to disclose protected information.

The vulnerability of the WebCompat extension in Mozilla Firefox and Firefox ESR browsers is related to insufficient protection for service data. Exploiting this vulnerability can allow a malicious actor to disclose protected information remotely...

Security update for MozillaFirefox

This update for MozillaFirefox fixes the following issues: Update to MozillaFirefox 128.12.0 MFSA 2025-23, bsc1244670: CVE-2025-6424: Use-after-free in FontFaceSet CVE-2025-6425: The WebCompat WebExtension shipped with Firefox exposed a persistent UUID CVE-2025-6426: No warning when opening...

SUSE CVE-2025-6425

An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser, and persisted between containers and normal/private browsing mode, but not profiles. This vulnerability was fixed in Firefox 140, Firefox ESR 115.25, Firefox ESR...

CVE-2025-6425

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser and persisted between containers and...