CVE-2026-58203

MEDIUMPre-NVD 5.35.3
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (7th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Trending — 3 sources updated this weekElevated
5.3EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.3Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

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
EG Score
5.3MEDIUMmedium confidence
EG Risk
40
EG Risk 40/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity53% × 45%
The EG Score, 5.3 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
7th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 6, 2026

Last Modified

July 27, 2026

Advisory Details (1)

Auto-updated Jul 8, 2026
Patch available. Sources: github.
GitHub advisoryMentions a patch (unverified)

NestedSecretsSettingsSource follows symlinks outside secrets_dir, enabling local file read and bypassing secrets_dir_max_size · Advisory · pydantic/pydantic-settings · GitHub

https://github.com/pydantic/pydantic-settings/security/advisories/GHSA-4xgf-cpjx-pc3j

Vendor Advisories for CVE-2026-58203(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(2 across 2 ecosystems)
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
pydantic-settings2.10.1-1 ... 2.8.1-2 (9 versions)
  • every version up to 2.14.2-1: fixed in 2.14.2-1
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
pydantic-settings2.12.0, 2.13.0, 2.13.1, 2.14.0, 2.14.1
  • 2.12.0 up to 2.14.2: fixed in 2.14.2
—

Weakness Classification(3)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 32× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 99 of 137 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 100 is merged into the row it repeats. The 38 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  2. 2026-10-13 13:54 UTCOSV refresh
  3. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  4. 2026-10-12 15:53 UTCEG score recompute
  5. 2026-10-11 19:36 UTCEG score recompute
  6. 2026-10-11 16:52 UTCEG score recompute
  7. 2026-10-11 14:14 UTCEG score recompute
  8. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  10. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  11. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  12. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  13. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  14. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  15. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  16. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  17. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  18. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  19. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  20. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  21. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  22. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  23. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  24. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  25. 2026-09-23 06:24 UTCEG score recompute
Show 74 more
  1. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  2. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  3. 2026-09-18 06:00 UTCEG score recompute
  4. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  5. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  6. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  7. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  8. 2026-09-13 16:48 UTCEG score recompute
  9. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  10. 2026-09-12 13:38 UTCEG score recompute
  11. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  12. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  13. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  14. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  15. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  16. 2026-09-05 23:12 UTCEG score recompute
  17. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  18. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  19. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  20. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  21. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  22. 2026-08-30 08:15 UTCEG score recompute
  23. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  24. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  25. 2026-08-27 21:59 UTCEG score recompute
  26. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  27. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  28. 2026-08-26 13:56 UTCEG score recompute
  29. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  30. 2026-08-24 23:18 UTCEG score recompute
  31. 2026-08-22 19:33 UTCEG score recompute
  32. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  33. 2026-08-21 17:41 UTCEG score recompute
  34. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  35. 2026-08-20 15:49 UTCEG score recompute
  36. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  37. 2026-08-19 12:51 UTCEG score recompute
  38. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  39. 2026-08-18 10:59 UTCEG score recompute
  40. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  41. 2026-08-17 07:32 UTCEG score recompute
  42. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  43. 2026-08-16 05:40 UTCEG score recompute
  44. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  45. 2026-08-15 03:48 UTCEG score recompute
  46. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  47. 2026-08-14 01:56 UTCEG score recompute
  48. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  49. 2026-08-13 00:04 UTCEG score recompute
  50. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  51. 2026-08-11 22:12 UTCEG score recompute
  52. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  53. 2026-08-09 18:25 UTCEG score recompute
  54. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  55. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  56. 2026-08-08 16:33 UTCEG score recompute
  57. 2026-08-07 14:40 UTCEG score recompute
  58. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  59. 2026-08-06 12:49 UTCEG score recompute
  60. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  61. 2026-08-05 10:56 UTCEG score recompute
  62. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  63. 2026-08-04 10:39 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  64. 2026-08-04 08:34 UTCEG score recompute
  65. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  66. 2026-08-02 03:49 UTCEG score recompute
  67. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  68. 2026-07-30 23:28 UTCEG score recompute
  69. 2026-07-30 16:28 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  70. 2026-07-30 01:30 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  71. 2026-07-28 19:37 UTCEG score recompute
  72. 2026-07-28 15:37 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  73. 2026-07-27 15:46 UTCEG score recompute
  74. 2026-07-27 14:14 UTCEPSS rescoreEPSS 0.2% · 7th percentile

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-58203?
CVE-2026-58203 is a medium-severity vulnerability; its CVE record was published on July 6, 2026. pydantic-settings provides settings management using Pydantic. From 2.12.0 until 2.14.2, NestedSecretsSettingsSource reads secret values from files in a configured secretsdir. When secretsnestedsubdir=True, a directory entry inside secretsdir that is a symbolic link pointing outside secretsdir is…
When was the CVE record for CVE-2026-58203 published?
The CVE record for CVE-2026-58203 was published on July 6, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 27, 2026; the record at its source may have been updated since.
Is CVE-2026-58203 actively exploited?
CVE-2026-58203 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (7th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-58203?
CVE-2026-58203 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-58203?
A fix for CVE-2026-58203 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-58203 are linked in the Vendor Advisories panel on this page.

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