CVE-2026-58203Public exploit

Local file read via inconsistent symlink traversal

Published Jul 6, 2026 · Updated Jul 6, 2026

Path traversal in Pydantic pydantic-settings 2.12.0 through 2.14.1 allows local users to read files via crafted secrets-directory symlinks. NestedSecretsSettingsSource validates size with Path.glob but loads with glob.iglob and read_text, so linked out-of-tree files evade accounting and enter settings values. Exploitation requires secrets_nested_subdir=True and influence over secrets_dir entries; it exposes file contents and defeats the size cap without inherent network reachability.

CVSS severity5.3
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Pydantic pydantic-settings 2.12.0 through 2.14.1 allows local users to read files via crafted secrets-directory symlinks. NestedSecretsSettingsSource validates size with Path.glob but loads with glob.iglob and read_text, so linked out-of-tree files evade accounting and enter settings values. Exploitation requires secrets_nested_subdir=True and influence over secrets_dir entries; it exposes file contents and defeats the size cap without inherent network reachability.

The record

CVE
CVE-2026-58203
Published
Jul 6, 2026
Updated
Jul 6, 2026
Vendor
Pydantic
Product
pydantic-settings
Classifications
CWE-400, CWE-59, CWE-22
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 2.12.0, < 2.14.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Pydantic · pydantic-settingsversion=>= 2.12.0, < 2.14.2

Published CVSS scores

5.3GitHubCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
CWE-59Improper Link Resolution Before File Access ('Link Following')
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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