Thunderbird (< 153.6) - CraftedSignal Threat Feedhttps://feed.craftedsignal.io/products/thunderbird--153.6/Trending threats, MITRE ATT&CK coverage, and detection metadata. Fed continuously.Hugoenhello@craftedsignal.iohello@craftedsignal.ioWed, 28 Oct 2026 23:59:19 +0000https://feed.craftedsignal.io/favicon-32x32.pngCraftedSignal Threat Feedhttps://feed.craftedsignal.io/3232https://feed.craftedsignal.io/favicon.svgMozilla Firefox, Firefox ESR, and Thunderbird vulnerabilitieshttps://feed.craftedsignal.io/briefs/2026-10-mozilla-advisory/Wed, 28 Oct 2026 23:59:19 +0000hello@craftedsignal.iohttps://feed.craftedsignal.io/briefs/2026-10-mozilla-advisory/Multiple vulnerabilities affecting Mozilla Firefox, Firefox ESR, and Thunderbird have been disclosed, necessitating updates to the latest versions to mitigate potential security risks.The Canadian Centre for Cyber Security (CCCS) has issued an advisory (AV26-1100) regarding security vulnerabilities identified in Mozilla Firefox, Firefox ESR, and Thunderbird. Users and administrators are advised to update their software to the versions specified in the Mozilla Foundation Security Advisories (MFSA2026-118, 119, 120, 121, and 122).

Recommendation

  • Upgrade Firefox to version 159 or later.
  • Upgrade Firefox ESR to version 115.44 or 153.6 or later.
  • Upgrade Thunderbird to version 159 or 153.6 or later.
  • Review the specific Mozilla Foundation Security Advisories linked in the references to understand the scope and impact of the patched vulnerabilities.
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