ubuntu-cve-2026-16743
Vulnerability from osv_ubuntu
Published
2026-07-24 13:17
Modified
2026-07-29 07:53
Summary
Details

A flaw was found in accountsservice. The systemd-homed code path for SetIconFile opens a user-supplied filename as root without the validation and privilege drop performed by the classic handler. A local attacker with a systemd-homed-managed account can read arbitrary files accessible to the accounts-daemon process.

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "accountsservice",
            "binary_version": "0.6.35-0ubuntu7.3+esm4"
          },
          {
            "binary_name": "gir1.2-accountsservice-1.0",
            "binary_version": "0.6.35-0ubuntu7.3+esm4"
          },
          {
            "binary_name": "libaccountsservice0",
            "binary_version": "0.6.35-0ubuntu7.3+esm4"
          },
          {
            "binary_name": "libpam-pin",
            "binary_version": "0.6.35-0ubuntu7.3+esm4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "accountsservice",
        "purl": "pkg:deb/ubuntu/accountsservice@0.6.35-0ubuntu7.3+esm4?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.6.34-0ubuntu6",
        "0.6.34-0ubuntu7",
        "0.6.35-0ubuntu1",
        "0.6.35-0ubuntu2",
        "0.6.35-0ubuntu3",
        "0.6.35-0ubuntu4",
        "0.6.35-0ubuntu5",
        "0.6.35-0ubuntu6",
        "0.6.35-0ubuntu7",
        "0.6.35-0ubuntu7.1",
        "0.6.35-0ubuntu7.2",
        "0.6.35-0ubuntu7.3",
        "0.6.35-0ubuntu7.3+esm2",
        "0.6.35-0ubuntu7.3+esm3",
        "0.6.35-0ubuntu7.3+esm4"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "accountsservice",
            "binary_version": "0.6.40-2ubuntu11.6+esm2"
          },
          {
            "binary_name": "gir1.2-accountsservice-1.0",
            "binary_version": "0.6.40-2ubuntu11.6+esm2"
          },
          {
            "binary_name": "libaccountsservice0",
            "binary_version": "0.6.40-2ubuntu11.6+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "accountsservice",
        "purl": "pkg:deb/ubuntu/accountsservice@0.6.40-2ubuntu11.6+esm2?arch=source\u0026distro=esm-infra-legacy/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.6.40-2ubuntu5",
        "0.6.40-2ubuntu6",
        "0.6.40-2ubuntu7",
        "0.6.40-2ubuntu8",
        "0.6.40-2ubuntu9",
        "0.6.40-2ubuntu10",
        "0.6.40-2ubuntu11",
        "0.6.40-2ubuntu11.1",
        "0.6.40-2ubuntu11.2",
        "0.6.40-2ubuntu11.3",
        "0.6.40-2ubuntu11.6",
        "0.6.40-2ubuntu11.6+esm1",
        "0.6.40-2ubuntu11.6+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "accountsservice",
            "binary_version": "0.6.45-1ubuntu1.3+esm2"
          },
          {
            "binary_name": "gir1.2-accountsservice-1.0",
            "binary_version": "0.6.45-1ubuntu1.3+esm2"
          },
          {
            "binary_name": "libaccountsservice0",
            "binary_version": "0.6.45-1ubuntu1.3+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "accountsservice",
        "purl": "pkg:deb/ubuntu/accountsservice@0.6.45-1ubuntu1.3+esm2?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.6.42-0ubuntu3",
        "0.6.42-0ubuntu4",
        "0.6.45-1ubuntu1",
        "0.6.45-1ubuntu1.3",
        "0.6.45-1ubuntu1.3+esm1",
        "0.6.45-1ubuntu1.3+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "accountsservice",
            "binary_version": "0.6.55-0ubuntu12~20.04.7+esm1"
          },
          {
            "binary_name": "gir1.2-accountsservice-1.0",
            "binary_version": "0.6.55-0ubuntu12~20.04.7+esm1"
          },
          {
            "binary_name": "libaccountsservice0",
            "binary_version": "0.6.55-0ubuntu12~20.04.7+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "accountsservice",
        "purl": "pkg:deb/ubuntu/accountsservice@0.6.55-0ubuntu12~20.04.7+esm1?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.6.55-0ubuntu10",
        "0.6.55-0ubuntu11",
        "0.6.55-0ubuntu12~20.04.1",
        "0.6.55-0ubuntu12~20.04.2",
        "0.6.55-0ubuntu12~20.04.4",
        "0.6.55-0ubuntu12~20.04.5",
        "0.6.55-0ubuntu12~20.04.6",
        "0.6.55-0ubuntu12~20.04.7",
        "0.6.55-0ubuntu12~20.04.7+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "accountsservice",
            "binary_version": "22.07.5-2ubuntu1.6"
          },
          {
            "binary_name": "gir1.2-accountsservice-1.0",
            "binary_version": "22.07.5-2ubuntu1.6"
          },
          {
            "binary_name": "libaccountsservice0",
            "binary_version": "22.07.5-2ubuntu1.6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "accountsservice",
        "purl": "pkg:deb/ubuntu/accountsservice@22.07.5-2ubuntu1.6?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.6.55-0ubuntu14",
        "0.6.55-3ubuntu1",
        "0.6.55-3ubuntu2",
        "0.6.55-3ubuntu4",
        "0.6.55-3ubuntu5",
        "0.6.55-3ubuntu6",
        "22.07.5-2ubuntu1",
        "22.07.5-2ubuntu1.3",
        "22.07.5-2ubuntu1.4",
        "22.07.5-2ubuntu1.5",
        "22.07.5-2ubuntu1.6"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "accountsservice",
            "binary_version": "23.13.9-2ubuntu6.1"
          },
          {
            "binary_name": "gir1.2-accountsservice-1.0",
            "binary_version": "23.13.9-2ubuntu6.1"
          },
          {
            "binary_name": "libaccountsservice0",
            "binary_version": "23.13.9-2ubuntu6.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "accountsservice",
        "purl": "pkg:deb/ubuntu/accountsservice@23.13.9-2ubuntu6.1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "23.13.9-2ubuntu2",
        "23.13.9-2ubuntu4",
        "23.13.9-2ubuntu6",
        "23.13.9-2ubuntu6.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "accountsservice",
            "binary_version": "23.13.9-8ubuntu5.2"
          },
          {
            "binary_name": "gir1.2-accountsservice-1.0",
            "binary_version": "23.13.9-8ubuntu5.2"
          },
          {
            "binary_name": "libaccountsservice0",
            "binary_version": "23.13.9-8ubuntu5.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "accountsservice",
        "purl": "pkg:deb/ubuntu/accountsservice@23.13.9-8ubuntu5.2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "23.13.9-7ubuntu1",
        "23.13.9-8ubuntu1",
        "23.13.9-8ubuntu2",
        "23.13.9-8ubuntu4",
        "23.13.9-8ubuntu5",
        "23.13.9-8ubuntu5.1",
        "23.13.9-8ubuntu5.2"
      ]
    }
  ],
  "aliases": [],
  "details": "A flaw was found in accountsservice. The systemd-homed code path for SetIconFile opens a user-supplied filename as root without the validation and privilege drop performed by the classic handler. A local attacker with a systemd-homed-managed account can read arbitrary files accessible to the accounts-daemon process.",
  "id": "UBUNTU-CVE-2026-16743",
  "modified": "2026-07-29T07:53:23Z",
  "published": "2026-07-24T13:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-16743"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-16743"
    },
    {
      "type": "REPORT",
      "url": "https://gitlab.freedesktop.org/accountsservice/accountsservice/-/work_items/138"
    },
    {
      "type": "REPORT",
      "url": "https://gitlab.freedesktop.org/accountsservice/accountsservice/-/merge_requests/182"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-16743"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2506381"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-16743"
  ]
}



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Nomenclature

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