Symlink Attack Affecting pydantic-settings package, versions [2.12.0,2.14.2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published29 Jun 2026
- disclosed19 Jun 2026
- creditUnknown
Introduced: 19 Jun 2026
CVE-2026-58203 (opens in a new tab)How to fix?
Upgrade pydantic-settings to version 2.14.2 or higher.
Overview
pydantic-settings is a Settings management using Pydantic
Affected versions of this package are vulnerable to Symlink Attack in the NestedSecretsSettingsSource process when secrets_nested_subdir is enabled and a symbolic link inside the configured secrets directory points outside of it. An attacker can access files outside the intended directory and bypass configured size restrictions by placing crafted symbolic links within the secrets directory. This is only exploitable if an attacker or lower-privileged component can create or modify entries in the configured secrets directory.
Workaround
This vulnerability can be mitigated by ensuring the configured secrets directory is fully owned and controlled by the application, or by avoiding the use of secrets_nested_subdir=True.