OESA-2026-4642 (CVE-2026-94422)

Vulnerability from osv_openeuler – Published: 2026-10-29 09:03 – Updated: 2026-10-29 09:03 – Source website
VLAI
Summary
xdg-dbus-proxy security update
Details

xdg-dbus-proxy is a filtering proxy for D-Bus connections. It was originally part of the flatpak project, but it has been broken out as a standalone module to facilitate using it in other contexts.

Security Fix(es):

An incorrect implementation of message filtering in xdg-dbus-proxy versions before 0.1.9 allows an attacker to bypass the intended message filtering on the D-Bus session bus by setting a reply serial number on non-reply messages. A malicious or compromised Flatpak app could use this to achieve arbitrary code execution outside its sandbox. xdg-dbus-proxy was designed to be part of the sandbox boundary for Flatpak, but it is released as a separate project and is sometimes used by other app frameworks such as Firejail.(CVE-2026-94422)

Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "xdg-dbus-proxy-0.1.2-3.oe2403sp3.aarch64.rpm",
          "xdg-dbus-proxy-debuginfo-0.1.2-3.oe2403sp3.aarch64.rpm",
          "xdg-dbus-proxy-debugsource-0.1.2-3.oe2403sp3.aarch64.rpm"
        ],
        "noarch": [
          "xdg-dbus-proxy-help-0.1.2-3.oe2403sp3.noarch.rpm"
        ],
        "src": [
          "xdg-dbus-proxy-0.1.2-3.oe2403sp3.src.rpm"
        ],
        "x86_64": [
          "xdg-dbus-proxy-0.1.2-3.oe2403sp3.x86_64.rpm",
          "xdg-dbus-proxy-debuginfo-0.1.2-3.oe2403sp3.x86_64.rpm",
          "xdg-dbus-proxy-debugsource-0.1.2-3.oe2403sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "xdg-dbus-proxy",
        "purl": "pkg:rpm/openEuler/xdg-dbus-proxy\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.1.2-3.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "xdg-dbus-proxy is a filtering proxy for D-Bus connections. It was originally part of the flatpak project, but it has been broken out as a standalone module to facilitate using it in other contexts.\r\n\r\nSecurity Fix(es):\n\nAn incorrect implementation of message filtering in xdg-dbus-proxy versions before 0.1.9 allows an attacker to bypass the intended message filtering on the D-Bus session bus by setting a reply serial number on non-reply messages. A malicious or compromised Flatpak app could use this to achieve arbitrary code execution outside its sandbox. xdg-dbus-proxy was designed to be part of the sandbox boundary for Flatpak, but it is released as a separate project and is sometimes used by other app frameworks such as Firejail.(CVE-2026-94422)",
  "id": "OESA-2026-4642",
  "modified": "2026-10-29T09:03:56Z",
  "published": "2026-10-29T09:03:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4642"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-94422"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "xdg-dbus-proxy security update",
  "upstream": [
    "CVE-2026-94422"
  ]
}



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