CVE-2026-58203

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/pydantic/pydantic-settings/security/advisories/GHSA-4xgf-cpjx-pc3j	Exploit Mitigation Vendor Advisory
https://github.com/pydantic/pydantic-settings/security/advisories/GHSA-4xgf-cpjx-pc3j	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:pydantic:pydantic-settings:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-07-06 16:16

Updated : 2026-07-27 17:37

NVD link : CVE-2026-58203

Mitre link : CVE-2026-58203

CVE.ORG link : CVE-2026-58203

JSON object : View

Products Affected

pydantic

pydantic-settings

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CWE-59

Improper Link Resolution Before File Access ('Link Following')

CWE-400

Uncontrolled Resource Consumption

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