{
  "fix": "RHSA-2026:3339",
  "url": "https://patchblox.com/security/fix/linux/rhsa-2026-3339",
  "summary": "RHSA-2026:3339, released March 12, 2026, fixes 38 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: High.",
  "platform": "linux",
  "type": "advisory",
  "title": "Security update for 2 packages",
  "released": "2026-03-12T22:28:44Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2026-2773, high severity",
  "supported": true,
  "cveCount": 38,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00917,
  "maxCvss": 10,
  "vendorAdvisory": "https://access.redhat.com/errata/RHSA-2026:3339",
  "appliesTo": [
    {
      "product": "firefox",
      "productUrl": "https://patchblox.com/security/product/linux/firefox",
      "release": "RHEL 9",
      "fixedVersion": "0:140.8.0-2.el9_7",
      "supported": true
    },
    {
      "product": "firefox-x11",
      "productUrl": "https://patchblox.com/security/product/linux/firefox-x11",
      "release": "RHEL 9",
      "fixedVersion": "0:140.8.0-2.el9_7",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2026-2773",
      "url": "https://patchblox.com/security/cve/CVE-2026-2773",
      "title": "Incorrect boundary conditions in the Web Audio component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00917,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2774",
      "url": "https://patchblox.com/security/cve/CVE-2026-2774",
      "title": "Integer overflow in the Audio/Video component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00852,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2775",
      "url": "https://patchblox.com/security/cve/CVE-2026-2775",
      "title": "Mitigation bypass in the DOM: HTML Parser component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00837,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2771",
      "url": "https://patchblox.com/security/cve/CVE-2026-2771",
      "title": "Undefined behavior in the DOM: Core \u0026 HTML component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00759,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2763",
      "url": "https://patchblox.com/security/cve/CVE-2026-2763",
      "title": "Use-after-free in the JavaScript Engine component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00737,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2764",
      "url": "https://patchblox.com/security/cve/CVE-2026-2764",
      "title": "JIT miscompilation, use-after-free in the JavaScript Engine: JIT component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00737,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2765",
      "url": "https://patchblox.com/security/cve/CVE-2026-2765",
      "title": "Use-after-free in the JavaScript Engine component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00737,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2766",
      "url": "https://patchblox.com/security/cve/CVE-2026-2766",
      "title": "Use-after-free in the JavaScript Engine: JIT component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00737,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2770",
      "url": "https://patchblox.com/security/cve/CVE-2026-2770",
      "title": "Use-after-free in the DOM: Bindings (WebIDL) component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00737,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2772",
      "url": "https://patchblox.com/security/cve/CVE-2026-2772",
      "title": "Use-after-free in the Audio/Video: Playback component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00737,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2447",
      "url": "https://patchblox.com/security/cve/CVE-2026-2447",
      "title": "Heap buffer overflow in libvpx",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.00699,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2779",
      "url": "https://patchblox.com/security/cve/CVE-2026-2779",
      "title": "Incorrect boundary conditions in the Networking: JAR component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00686,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2769",
      "url": "https://patchblox.com/security/cve/CVE-2026-2769",
      "title": "Use-after-free in the Storage: IndexedDB component",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00686,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2788",
      "url": "https://patchblox.com/security/cve/CVE-2026-2788",
      "title": "Incorrect boundary conditions in the Audio/Video: GMP component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00677,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2787",
      "url": "https://patchblox.com/security/cve/CVE-2026-2787",
      "title": "Use-after-free in the DOM: Window and Location component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00641,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2762",
      "url": "https://patchblox.com/security/cve/CVE-2026-2762",
      "title": "Integer overflow in the JavaScript: Standard Library component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00632,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2791",
      "url": "https://patchblox.com/security/cve/CVE-2026-2791",
      "title": "Mitigation bypass in the Networking: Cache component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00599,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2757",
      "url": "https://patchblox.com/security/cve/CVE-2026-2757",
      "title": "Incorrect boundary conditions in the WebRTC: Audio/Video component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00589,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2785",
      "url": "https://patchblox.com/security/cve/CVE-2026-2785",
      "title": "Invalid pointer in the JavaScript Engine component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00576,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2758",
      "url": "https://patchblox.com/security/cve/CVE-2026-2758",
      "title": "Use-after-free in the JavaScript: GC component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00573,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2776",
      "url": "https://patchblox.com/security/cve/CVE-2026-2776",
      "title": "Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software",
      "priority": "High",
      "severity": "Important",
      "cvss": 10,
      "epss": 0.00562,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2778",
      "url": "https://patchblox.com/security/cve/CVE-2026-2778",
      "title": "Sandbox escape due to incorrect boundary conditions in the DOM: Core \u0026 HTML component",
      "priority": "High",
      "severity": "Important",
      "cvss": 10,
      "epss": 0.00562,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2789",
      "url": "https://patchblox.com/security/cve/CVE-2026-2789",
      "title": "Use-after-free in the Graphics: ImageLib component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.0053,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2786",
      "url": "https://patchblox.com/security/cve/CVE-2026-2786",
      "title": "Use-after-free in the JavaScript Engine component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00514,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2784",
      "url": "https://patchblox.com/security/cve/CVE-2026-2784",
      "title": "Mitigation bypass in the DOM: Security component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00488,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2760",
      "url": "https://patchblox.com/security/cve/CVE-2026-2760",
      "title": "Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component",
      "priority": "High",
      "severity": "Important",
      "cvss": 10,
      "epss": 0.00475,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2761",
      "url": "https://patchblox.com/security/cve/CVE-2026-2761",
      "title": "Sandbox escape in the Graphics: WebRender component",
      "priority": "High",
      "severity": "Important",
      "cvss": 10,
      "epss": 0.00475,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2759",
      "url": "https://patchblox.com/security/cve/CVE-2026-2759",
      "title": "Incorrect boundary conditions in the Graphics: ImageLib component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00475,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2767",
      "url": "https://patchblox.com/security/cve/CVE-2026-2767",
      "title": "Use-after-free in the JavaScript: WebAssembly component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00462,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2768",
      "url": "https://patchblox.com/security/cve/CVE-2026-2768",
      "title": "Sandbox escape in the Storage: IndexedDB component",
      "priority": "High",
      "severity": "Important",
      "cvss": 10,
      "epss": 0.00439,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2777",
      "url": "https://patchblox.com/security/cve/CVE-2026-2777",
      "title": "Privilege escalation in the Messaging System component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00439,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2781",
      "url": "https://patchblox.com/security/cve/CVE-2026-2781",
      "title": "Integer overflow in the Libraries component in NSS",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.00433,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2780",
      "url": "https://patchblox.com/security/cve/CVE-2026-2780",
      "title": "Privilege escalation in the Netmonitor component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00395,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2792",
      "url": "https://patchblox.com/security/cve/CVE-2026-2792",
      "title": "Memory safety bugs fixed in Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00377,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2793",
      "url": "https://patchblox.com/security/cve/CVE-2026-2793",
      "title": "Memory safety bugs fixed in Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00377,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2783",
      "url": "https://patchblox.com/security/cve/CVE-2026-2783",
      "title": "Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.00342,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2782",
      "url": "https://patchblox.com/security/cve/CVE-2026-2782",
      "title": "Privilege escalation in the Netmonitor component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00339,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-2790",
      "url": "https://patchblox.com/security/cve/CVE-2026-2790",
      "title": "Same-origin policy bypass in the Networking: JAR component",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00254,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T12:40:37Z"
}