CVE-2026-58203

Source
https://cve.org/CVERecord?id=CVE-2026-58203
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-58203.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-58203
Aliases
Downstream
Published
2026-07-06T14:24:15.740Z
Modified
2026-07-08T08:13:48.136737020Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
Summary
NestedSecretsSettingsSource follows symlinks outside secrets_dir, enabling local file read and bypassing secrets_dir_max_size
Details

pydantic-settings provides settings management using Pydantic. From 2.12.0 until 2.14.2, NestedSecretsSettingsSource reads secret values from files in a configured secretsdir. When secretsnestedsubdir=True, a directory entry inside secretsdir that is a symbolic link pointing outside secretsdir is followed, so files outside the configured directory are read into settings values. The same code path bypasses the documented secretsdirmaxsize 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.

Database specific
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58203.json",
    "cwe_ids": [
        "CWE-22",
        "CWE-400",
        "CWE-59"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/pydantic/pydantic-settings

Affected ranges

Type
GIT
Repo
https://github.com/pydantic/pydantic-settings
Events
Database specific
{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "2.12.0"
        },
        {
            "fixed": "2.14.2"
        }
    ]
}

Affected versions

v2.*
v2.12.0
v2.13.0
v2.13.1
v2.14.0
v2.14.1

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-58203.json"