CVE-2026-58203

NameCVE-2026-58203
Descriptionpydantic-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.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
pydantic-settings (PTS)trixie2.8.1-2fixed
forky, sid2.14.2-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
pydantic-settingssourcetrixie(not affected)
pydantic-settingssource(unstable)2.14.2-1

Notes

[trixie] - pydantic-settings <not-affected> (Vulnerable code not present)
https://github.com/pydantic/pydantic-settings/security/advisories/GHSA-4xgf-cpjx-pc3j

Search for package or bug name: Reporting problems