OESA-2026-4308 (CVE-2026-96282)

Vulnerability from osv_openeuler – Published: 2026-10-16 11:59 – Updated: 2026-10-16 11:59 – Source website
VLAI
Summary
flatpak security update
Details

flatpak is a system for building, distributing and running sandboxed desktop applications on Linux. See https://wiki.gnome.org/Projects/SandboxedApps for more information.

Security Fix(es):

A malicious Flatpak extension can probe the host filesystem to determine what files and directories exist at arbitrary paths, and host directory listings can be disclosed to sandboxed applications using the extension. Additionally, unvalidated extension metadata can cause extension content to be mounted at unintended locations inside the sandbox.(CVE-2026-96282)

By calling org.freedesktop.Flatpak.SystemHelper.CancelPull on another user's pull, the pull is not actually cancelled but removed from internal tracking, making it impossible for the owning user to stop it. Ongoing pulls cannot be stopped.(CVE-2026-96283)

Severity
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "flatpak-1.10.2-15.oe2403sp1.aarch64.rpm",
          "flatpak-debuginfo-1.10.2-15.oe2403sp1.aarch64.rpm",
          "flatpak-debugsource-1.10.2-15.oe2403sp1.aarch64.rpm",
          "flatpak-devel-1.10.2-15.oe2403sp1.aarch64.rpm"
        ],
        "noarch": [
          "flatpak-help-1.10.2-15.oe2403sp1.noarch.rpm"
        ],
        "src": [
          "flatpak-1.10.2-15.oe2403sp1.src.rpm"
        ],
        "x86_64": [
          "flatpak-1.10.2-15.oe2403sp1.x86_64.rpm",
          "flatpak-debuginfo-1.10.2-15.oe2403sp1.x86_64.rpm",
          "flatpak-debugsource-1.10.2-15.oe2403sp1.x86_64.rpm",
          "flatpak-devel-1.10.2-15.oe2403sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP1",
        "name": "flatpak",
        "purl": "pkg:rpm/openEuler/flatpak\u0026distro=openEuler-24.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.10.2-15.oe2403sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Low"
  },
  "details": "flatpak is a system for building, distributing and running sandboxed desktop applications on Linux. See https://wiki.gnome.org/Projects/SandboxedApps for more information.\r\n\r\nSecurity Fix(es):\n\nA malicious Flatpak extension can probe the host filesystem to determine what files and directories exist at arbitrary paths, and host directory listings can be disclosed to sandboxed applications using the extension. Additionally, unvalidated extension metadata can cause extension content to be mounted at unintended locations inside the sandbox.(CVE-2026-96282)\n\nBy calling org.freedesktop.Flatpak.SystemHelper.CancelPull on another user\u0026apos;s pull, the pull is not actually cancelled but removed from internal tracking, making it impossible for the owning user to stop it. Ongoing pulls cannot be stopped.(CVE-2026-96283)",
  "id": "OESA-2026-4308",
  "modified": "2026-10-16T11:59:12Z",
  "published": "2026-10-16T11:59:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4308"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96282"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96283"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "flatpak security update",
  "upstream": [
    "CVE-2026-96282",
    "CVE-2026-96283"
  ]
}



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