{
  "threat_severity" : "Moderate",
  "public_date" : "2026-04-03T23:56:42Z",
  "bugzilla" : {
    "description" : "Electron: Electron: Information disclosure via crafted second-instance message",
    "id" : "2455021",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2455021"
  },
  "cvss3" : {
    "cvss3_base_score" : "5.3",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:L",
    "status" : "draft"
  },
  "cwe" : "CWE-125",
  "details" : [ "Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0, on macOS and Linux, apps that call app.requestSingleInstanceLock() were vulnerable to an out-of-bounds heap read when parsing a crafted second-instance message. Leaked memory could be delivered to the app's second-instance event handler. This issue is limited to processes running as the same user as the Electron app. Apps that do not call app.requestSingleInstanceLock() are not affected. Windows is not affected by this issue. This issue has been patched in versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0.", "A flaw was found in Electron, a framework for building desktop applications. On macOS and Linux, a local user could exploit an out-of-bounds heap read vulnerability by sending a specially crafted message to an Electron application that uses the `app.requestSingleInstanceLock()` function. Apps that do not call app.requestSingleInstanceLock() are not affected. This could lead to the disclosure of sensitive memory contents, potentially revealing confidential information. This issue affects only processes running under the same user as the Electron application." ],
  "package_state" : [ {
    "product_name" : "Red Hat Build of Podman Desktop",
    "fix_state" : "Fix deferred",
    "package_name" : "podman-desktop-macos-1-0",
    "cpe" : "cpe:/a:redhat:podman_desktop:1"
  }, {
    "product_name" : "Red Hat Build of Podman Desktop",
    "fix_state" : "Fix deferred",
    "package_name" : "podman-desktop-windows-1-0",
    "cpe" : "cpe:/a:redhat:podman_desktop:1"
  }, {
    "product_name" : "Red Hat Build of Podman Desktop - Tech Preview",
    "fix_state" : "Fix deferred",
    "package_name" : "rhdesktop/rh-podman-desktop-ext-openshift-local-rhel10",
    "cpe" : "cpe:/a:redhat:podman_desktop:0"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-34776\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-34776\nhttps://github.com/electron/electron/security/advisories/GHSA-3c8v-cfp5-9885" ],
  "name" : "CVE-2026-34776",
  "mitigation" : {
    "value" : "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
    "lang" : "en:us"
  },
  "csaw" : false
}