ubuntu-cve-2026-57231
Vulnerability from osv_ubuntu
Published
2026-06-26 17:16
Modified
2026-06-26 17:16
Summary
Details

Podman is a tool for managing OCI containers and pods. From 1.8.1 until 5.8.4, a container image that contains a environment variable with just a key and no value can trick podman into passing that variable from the host into the container. This is made worse by the fact that using an asterisk (*) will cause podman to pass all host variables into the container. So essentially a malicious image can exfiltrate all podman environment variables that are set in the session from where the container is launched. This vulnerability is fixed in 5.8.4 and 6.0.0.

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

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "podman",
            "binary_version": "5.4.2+ds1-2"
          },
          {
            "binary_name": "podman-docker",
            "binary_version": "5.4.2+ds1-2"
          },
          {
            "binary_name": "podman-remote",
            "binary_version": "5.4.2+ds1-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "podman",
        "purl": "pkg:deb/ubuntu/podman@5.4.2+ds1-2?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.4.1+ds1-1",
        "5.4.2+ds1-1",
        "5.4.2+ds1-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "podman",
            "binary_version": "5.7.0+ds2-3build1"
          },
          {
            "binary_name": "podman-docker",
            "binary_version": "5.7.0+ds2-3build1"
          },
          {
            "binary_name": "podman-remote",
            "binary_version": "5.7.0+ds2-3build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "podman",
        "purl": "pkg:deb/ubuntu/podman@5.7.0+ds2-3build1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.4.2+ds1-2",
        "5.7.0+ds2-3",
        "5.7.0+ds2-3build1"
      ]
    }
  ],
  "aliases": [],
  "details": "Podman is a tool for managing OCI containers and pods. From 1.8.1 until 5.8.4, a container image that contains a environment variable with just a key and no value can trick podman into passing that variable from the host into the container. This is made worse by the fact that using an asterisk (*) will cause podman to pass all host variables into the container. So essentially a malicious image can exfiltrate all podman environment variables that are set in the session from where the container is launched. This vulnerability is fixed in 5.8.4 and 6.0.0.",
  "id": "UBUNTU-CVE-2026-57231",
  "modified": "2026-06-26T17:16:00Z",
  "published": "2026-06-26T17:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-57231"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-57231"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/podman-container-tools/podman/security/advisories/GHSA-4hq8-gpf5-8p68"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/podman-container-tools/podman/commit/6c431b73dbf8e4b20b778644d7a80caebdb75050"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-57231"
  ]
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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