Directory Traversal Affecting pydantic-settings package, versions <2.14.2-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.19% (9th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-PYDANTICSETTINGS-17872867
  • published7 Jul 2026
  • disclosed6 Jul 2026

Introduced: 6 Jul 2026

CVE-2026-58203  (opens in a new tab)
CWE-22  (opens in a new tab)
CWE-59  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Debian:unstable pydantic-settings to version 2.14.2-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pydantic-settings package and not the pydantic-settings package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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 Base Scores

version 3.1