pydantic-settings — security advisory

{
  "id": "110f407ff348a9bc8e618d6f1a8c1c473fa1e2c7e3183f2f88214fc04e7dcf2f",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-58203",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-58203",
    "summary": "pydantic-settings provides settings management using Pydantic. From 2.12.0 until 2.14.2, NestedSecretsSettingsSource reads secret values from files in a configured secrets_dir. When secrets_nested_subdir=True, a directory entry inside secrets_dir that is a symbolic link pointing outside secrets_dir is followed, so files outside the configured directory are read into settings values. The same code path bypasses the documented secrets_dir_max_size protection. An attacker or lower-privileged component able to influence entries in the configured secrets directory (for example, a writable or shared secrets mount) can turn this into an unintended local file read into settings and can defeat the advertised loading-size cap. This vulnerability is fixed in 2.14.2.",
    "evidence": "osv:DEBIAN-CVE-2026-58203",
    "products": [
      {
        "name": {
          "value": "pydantic-settings",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.14.2-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "2.10.1-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.10.1-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.11.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.12.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.12.0-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.13.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.14.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.14.1-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.8.1-2",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "DEBIAN-CVE-2026-58203",
      "aliases": [
        "DEBIAN-CVE-2026-58203"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.14.2-1"
                }
              ]
            }
          ],
          "package": {
            "name": "pydantic-settings",
            "purl": "pkg:deb/debian/pydantic-settings?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "versions": [
            "2.10.1-1",
            "2.10.1-2",
            "2.11.0-1",
            "2.12.0-1",
            "2.12.0-2",
            "2.13.0-1",
            "2.14.0-1",
            "2.14.1-1",
            "2.8.1-2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-58203.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-26T11:47:24.989415104Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-58203"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-58203"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-58203",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 450819,
  "published_at": "2026-07-06T16:16:35.59+00:00"
}