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thunderbird — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2024-9398

By checking the result of calls to `window.open` with specifically set protocol handlers, an attacker could determine if the application which implements that protocol handler is installed. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Thunderbird < 128.3, and Thunderbird < 131.

Products
thunderbird
Affected versions
Not specified
Fixed versions
1:128.3.0esr-1
CVEs
CVE-2024-9398
Confirmed fixed CVEs
Not specified
Updated in this feed
28 Oct 2026, 11:07 UTC · Revision 1

Source evidence

DEBIAN-CVE-2024-9398

core-osv · Original source

Published 1 Oct 2024, 16:15 UTC

By checking the result of calls to `window.open` with specifically set protocol handlers, an attacker could determine if the application which implements that protocol handler is installed. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Thunderbird < 128.3, and Thunderbird < 131.

osv:DEBIAN-CVE-2024-9398

thunderbird

Fixed versions: 1:128.3.0esr-1

thunderbird

Fixed versions: 1:128.3.0esr-1

Complete source record
{
  "id": "e8601b47c68405d467b116f6050fc140a0b24f674b982a2e3da227e701d4f7ea",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2024-9398",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2024-9398",
    "summary": "By checking the result of calls to `window.open` with specifically set protocol handlers, an attacker could determine if the application which implements that protocol handler is installed. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Thunderbird < 128.3, and Thunderbird < 131.",
    "evidence": "osv:DEBIAN-CVE-2024-9398",
    "products": [
      {
        "name": {
          "value": "thunderbird",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:128.3.0esr-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "thunderbird",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:128.3.0esr-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "DEBIAN-CVE-2024-9398",
      "aliases": [
        "DEBIAN-CVE-2024-9398"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:128.3.0esr-1"
                }
              ]
            }
          ],
          "package": {
            "name": "thunderbird",
            "purl": "pkg:deb/debian/thunderbird?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2024-9398.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:128.3.0esr-1"
                }
              ]
            }
          ],
          "package": {
            "name": "thunderbird",
            "purl": "pkg:deb/debian/thunderbird?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2024-9398.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-09T09:47:24.450849540Z",
      "provider": "osv",
      "upstream": [
        "CVE-2024-9398"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2024-9398"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2024-9398",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 111465,
  "published_at": "2024-10-01T16:15:10.913+00:00"
}