CVE-2026-58203

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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
Related
Published
2026-07-06T14:24:15Z
Modified
2026-08-12T03:51:08Z
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 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.

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

Affected packages

Git / github.com/pydantic/pydantic-settings

Affected ranges

Type
GIT
Repo
https://github.com/pydantic/pydantic-settings
Events
Introduced
584983d253a0fac4dfb294d1e6f9ef188add468b
Fixed
d703bd717e5e07439fa89da2245eee6139413e9e
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:pydantic:pydantic-settings:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "2.12.0"
        },
        {
            "fixed": "2.14.2"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

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"