{
  "cveId": "CVE-2022-26386",
  "url": "https://patchblox.com/security/cve/CVE-2022-26386",
  "summary": "CVE-2022-26386 is fixed in 8 products on 1 platform, first by thunderbird 1:91.7.0\u002Bbuild2-0ubuntu0.18.04.1, released March 8, 2022. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "firefox: Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.\n\nThis...",
  "description": "Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.\n\nThis update upgrades Firefox to version 91.7.0 ESR.\n\nSecurity Fix(es):\n\n* Mozilla: Use-after-free in XSLT parameter processing (CVE-2022-26485)\n\n* Mozilla: Use-after-free in WebGPU IPC Framework (CVE-2022-26486)\n\n* expat: Malformed 2- and 3-byte UTF-8 sequences can lead to arbitrary code execution (CVE-2022-25235)\n\n* expat: Namespace-separator characters in \u0022xmlns[:prefix]\u0022 attribute values can lead to arbitrary code execution (CVE-2022-25236)\n\n* expat: Integer overflow in storeRawNames() (CVE-2022-25315)\n\n* Mozilla: Use-after-free in text reflows (CVE-2022-26381)\n\n* Mozilla: Browser window spoof using fullscreen mode (CVE-2022-26383)\n\n* Mozilla: iframe allow-scripts sandbox bypass (CVE-2022-26384)\n\n* Mozilla: Time-of-check time-of-use bug when verifying add-on signatures (CVE-2022-26387)\n\n* Mozilla: Temporary files downloaded to /tmp and accessible by other local users (CVE-2022-26386)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "published": "2022-03-08T16:00:00Z",
  "severity": "Critical",
  "cvss": 9.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00706,
  "epssPercentile": 0.53625,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "firefox",
      "release": "RHEL 8",
      "fixedVersion": "0:91.7.0-3.el8_5",
      "fix": "RHSA-2022:0818",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-0818",
      "released": "2022-03-10T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox",
      "release": "almalinux 8",
      "fixedVersion": "91.7.0-3.el8_5.alma",
      "fix": "ALSA-2022:0818",
      "url": "https://patchblox.com/security/fix/linux/alsa-2022-0818",
      "released": "2022-03-10T14:36:51Z"
    },
    {
      "platform": "linux",
      "product": "firefox",
      "release": "ol 8",
      "fixedVersion": "0:91.7.0-3.0.1.el8_5",
      "fix": "ELSA-2022-0818",
      "url": "https://patchblox.com/security/fix/linux/elsa-2022-0818",
      "released": "2022-03-10T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox",
      "release": "rocky 8",
      "fixedVersion": "0:91.7.0-3.el8_5",
      "fix": "RLSA-2022:0818",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2022-0818",
      "released": "2022-03-10T14:36:51Z"
    },
    {
      "platform": "linux",
      "product": "firefox-esr",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "91.7.0esr-1",
      "fix": "DEBIAN-CVE-2022-26386",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-26386",
      "released": "2022-12-22T20:15:22Z"
    },
    {
      "platform": "linux",
      "product": "firefox-esr",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "91.7.0esr-1",
      "fix": "DEBIAN-CVE-2022-26386",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-26386",
      "released": "2022-12-22T20:15:22Z"
    },
    {
      "platform": "linux",
      "product": "firefox-esr",
      "release": "Debian 14",
      "fixedVersion": "91.7.0esr-1",
      "fix": "DEBIAN-CVE-2022-26386",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-26386",
      "released": "2022-12-22T20:15:22Z"
    },
    {
      "platform": "linux",
      "product": "thunderbird",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "1:91.7.0-1",
      "fix": "DEBIAN-CVE-2022-26386",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-26386",
      "released": "2022-12-22T20:15:22Z"
    },
    {
      "platform": "linux",
      "product": "thunderbird",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "1:91.7.0-1",
      "fix": "DEBIAN-CVE-2022-26386",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-26386",
      "released": "2022-12-22T20:15:22Z"
    },
    {
      "platform": "linux",
      "product": "thunderbird",
      "release": "Debian 14",
      "fixedVersion": "1:91.7.0-1",
      "fix": "DEBIAN-CVE-2022-26386",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-26386",
      "released": "2022-12-22T20:15:22Z"
    },
    {
      "platform": "linux",
      "product": "thunderbird",
      "release": "RHEL 8",
      "fixedVersion": "0:91.7.0-2.el8_5",
      "fix": "RHSA-2022:0845",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-0845",
      "released": "2022-03-14T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "thunderbird",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1:91.7.0\u002Bbuild2-0ubuntu0.18.04.1",
      "fix": "thunderbird 1:91.7.0\u002Bbuild2-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-thunderbird-1-91.7.0-build2-0ubuntu0.18.04.1",
      "released": "2022-03-08T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "thunderbird",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1:91.7.0\u002Bbuild2-0ubuntu0.20.04.1",
      "fix": "thunderbird 1:91.7.0\u002Bbuild2-0ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-thunderbird-1-91.7.0-build2-0ubuntu0.20.04.1",
      "released": "2022-03-08T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "thunderbird",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1:91.7.0\u002Bbuild2-0ubuntu1",
      "fix": "thunderbird 1:91.7.0\u002Bbuild2-0ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-thunderbird-1-91.7.0-build2-0ubuntu1",
      "released": "2022-03-08T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "thunderbird",
      "release": "almalinux 8",
      "fixedVersion": "91.7.0-2.el8_5.alma",
      "fix": "ALSA-2022:0845",
      "url": "https://patchblox.com/security/fix/linux/alsa-2022-0845",
      "released": "2022-03-14T09:49:10Z"
    },
    {
      "platform": "linux",
      "product": "thunderbird",
      "release": "ol 8",
      "fixedVersion": "0:91.7.0-2.0.1.el8_5",
      "fix": "ELSA-2022-0845",
      "url": "https://patchblox.com/security/fix/linux/elsa-2022-0845",
      "released": "2022-03-14T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "thunderbird",
      "release": "rocky 8",
      "fixedVersion": "0:91.7.0-2.el8_5",
      "fix": "RLSA-2022:0845",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2022-0845",
      "released": "2022-03-14T09:49:10Z"
    },
    {
      "platform": "linux",
      "product": "thunderbird-gnome-support",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1:91.7.0\u002Bbuild2-0ubuntu0.18.04.1",
      "fix": "thunderbird-gnome-support 1:91.7.0\u002Bbuild2-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-thunderbird-gnome-support-1-91.7.0-build2-0ubuntu0.18.04.1",
      "released": "2022-03-08T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "thunderbird-gnome-support",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1:91.7.0\u002Bbuild2-0ubuntu0.20.04.1",
      "fix": "thunderbird-gnome-support 1:91.7.0\u002Bbuild2-0ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-thunderbird-gnome-support-1-91.7.0-build2-0ubuntu0.20.04.1",
      "released": "2022-03-08T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "thunderbird-gnome-support",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1:91.7.0\u002Bbuild2-0ubuntu1",
      "fix": "thunderbird-gnome-support 1:91.7.0\u002Bbuild2-0ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-thunderbird-gnome-support-1-91.7.0-build2-0ubuntu1",
      "released": "2022-03-08T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "thunderbird-mozsymbols",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1:91.7.0\u002Bbuild2-0ubuntu0.18.04.1",
      "fix": "thunderbird-mozsymbols 1:91.7.0\u002Bbuild2-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-thunderbird-mozsymbols-1-91.7.0-build2-0ubuntu0.18.04.1",
      "released": "2022-03-08T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "thunderbird-mozsymbols",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1:91.7.0\u002Bbuild2-0ubuntu0.20.04.1",
      "fix": "thunderbird-mozsymbols 1:91.7.0\u002Bbuild2-0ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-thunderbird-mozsymbols-1-91.7.0-build2-0ubuntu0.20.04.1",
      "released": "2022-03-08T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "thunderbird-mozsymbols",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1:91.7.0\u002Bbuild2-0ubuntu1",
      "fix": "thunderbird-mozsymbols 1:91.7.0\u002Bbuild2-0ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-thunderbird-mozsymbols-1-91.7.0-build2-0ubuntu1",
      "released": "2022-03-08T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xul-ext-calendar-timezones",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1:91.7.0\u002Bbuild2-0ubuntu0.18.04.1",
      "fix": "xul-ext-calendar-timezones 1:91.7.0\u002Bbuild2-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-xul-ext-calendar-timezones-1-91.7.0-build2-0ubuntu0.18.04.1",
      "released": "2022-03-08T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xul-ext-calendar-timezones",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1:91.7.0\u002Bbuild2-0ubuntu0.20.04.1",
      "fix": "xul-ext-calendar-timezones 1:91.7.0\u002Bbuild2-0ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-xul-ext-calendar-timezones-1-91.7.0-build2-0ubuntu0.20.04.1",
      "released": "2022-03-08T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xul-ext-calendar-timezones",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1:91.7.0\u002Bbuild2-0ubuntu1",
      "fix": "xul-ext-calendar-timezones 1:91.7.0\u002Bbuild2-0ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-xul-ext-calendar-timezones-1-91.7.0-build2-0ubuntu1",
      "released": "2022-03-08T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xul-ext-gdata-provider",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1:91.7.0\u002Bbuild2-0ubuntu0.18.04.1",
      "fix": "xul-ext-gdata-provider 1:91.7.0\u002Bbuild2-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-xul-ext-gdata-provider-1-91.7.0-build2-0ubuntu0.18.04.1",
      "released": "2022-03-08T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xul-ext-gdata-provider",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1:91.7.0\u002Bbuild2-0ubuntu0.20.04.1",
      "fix": "xul-ext-gdata-provider 1:91.7.0\u002Bbuild2-0ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-xul-ext-gdata-provider-1-91.7.0-build2-0ubuntu0.20.04.1",
      "released": "2022-03-08T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xul-ext-gdata-provider",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1:91.7.0\u002Bbuild2-0ubuntu1",
      "fix": "xul-ext-gdata-provider 1:91.7.0\u002Bbuild2-0ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-xul-ext-gdata-provider-1-91.7.0-build2-0ubuntu1",
      "released": "2022-03-08T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xul-ext-lightning",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1:91.7.0\u002Bbuild2-0ubuntu0.18.04.1",
      "fix": "xul-ext-lightning 1:91.7.0\u002Bbuild2-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-xul-ext-lightning-1-91.7.0-build2-0ubuntu0.18.04.1",
      "released": "2022-03-08T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xul-ext-lightning",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1:91.7.0\u002Bbuild2-0ubuntu0.20.04.1",
      "fix": "xul-ext-lightning 1:91.7.0\u002Bbuild2-0ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-xul-ext-lightning-1-91.7.0-build2-0ubuntu0.20.04.1",
      "released": "2022-03-08T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xul-ext-lightning",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1:91.7.0\u002Bbuild2-0ubuntu1",
      "fix": "xul-ext-lightning 1:91.7.0\u002Bbuild2-0ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-xul-ext-lightning-1-91.7.0-build2-0ubuntu1",
      "released": "2022-03-08T16:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}