CVE-2026-38974

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-07-16. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Dulwich through 1.1.0 was found to be missing SSH host key verification in contrib/paramiko_vendor.py.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: Track

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
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
9%
KEV
Not listed

Published

July 15, 2026

Last Modified

July 16, 2026

Advisory Details (2)

Auto-updated Jul 19, 2026
Patch available. Sources: github_pr.
github_pr Patch Available

[bug fix] contrib: fix paramiko host key verification

Patch available: jelmer/dulwich dulwich-1.2.0 (PR #2123 merged 2026-03-25)

https://github.com/jelmer/dulwich/pull/2123
generic

GitHub - jelmer/dulwich: Pure-Python Git implementation · GitHub

https://github.com/jelmer/dulwich

Vendor Advisories for CVE-2026-38974(1)

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

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
dulwich0.20.15-1 ... 1.2.7-2 (38 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
dulwich0.21.2-1 ... 1.2.7-2 (21 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
dulwich0.22.7-1 ... 1.2.7-2 (17 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
dulwich0.22.7-1 ... 1.1.0-3 (10 versions)1.2.0-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 76× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 113 total refreshes for this CVE.

  1. 2026-08-30 03:59 UTCEG score recompute
  2. 2026-08-30 03:59 UTCGHSA enrichment
  3. 2026-08-30 01:22 UTCEPSS rescore
  4. 2026-08-28 21:41 UTCEPSS rescore
  5. 2026-08-27 22:34 UTCGHSA enrichment
  6. 2026-08-26 23:14 UTCEG score recompute
  7. 2026-08-26 23:14 UTCGHSA enrichment
  8. 2026-08-26 14:46 UTCEPSS rescore
  9. 2026-08-25 21:09 UTCEG score recompute
  10. 2026-08-25 21:09 UTCGHSA enrichment
  11. 2026-08-25 13:49 UTCEPSS rescore
  12. 2026-08-24 21:43 UTCEG score recompute
  13. 2026-08-24 21:43 UTCGHSA enrichment
  14. 2026-08-23 21:48 UTCGHSA enrichment
  15. 2026-08-22 22:27 UTCEG score recompute
  16. 2026-08-22 22:27 UTCGHSA enrichment
  17. 2026-08-21 23:49 UTCEPSS rescore
  18. 2026-08-21 23:06 UTCGHSA enrichment
  19. 2026-08-20 23:42 UTCEG score recompute
  20. 2026-08-20 23:42 UTCGHSA enrichment
  21. 2026-08-20 22:55 UTCEPSS rescore
  22. 2026-08-20 00:21 UTCEG score recompute
  23. 2026-08-20 00:21 UTCGHSA enrichment
  24. 2026-08-19 17:03 UTCEPSS rescore
  25. 2026-08-18 21:56 UTCEG score recompute
Show 75 more
  1. 2026-08-18 21:55 UTCGHSA enrichment
  2. 2026-08-18 13:48 UTCEPSS rescore
  3. 2026-08-17 21:52 UTCGHSA enrichment
  4. 2026-08-16 22:24 UTCEG score recompute
  5. 2026-08-16 22:24 UTCGHSA enrichment
  6. 2026-08-16 14:56 UTCEPSS rescore
  7. 2026-08-16 02:14 UTCEPSS rescore
  8. 2026-08-15 23:03 UTCEG score recompute
  9. 2026-08-15 23:03 UTCGHSA enrichment
  10. 2026-08-15 01:30 UTCEPSS rescore
  11. 2026-08-14 23:42 UTCGHSA enrichment
  12. 2026-08-14 00:21 UTCEG score recompute
  13. 2026-08-14 00:21 UTCGHSA enrichment
  14. 2026-08-13 22:00 UTCEPSS rescore
  15. 2026-08-13 01:00 UTCEG score recompute
  16. 2026-08-13 01:00 UTCGHSA enrichment
  17. 2026-08-12 13:51 UTCEPSS rescore
  18. 2026-08-12 01:40 UTCEG score recompute
  19. 2026-08-12 01:40 UTCGHSA enrichment
  20. 2026-08-11 13:43 UTCEPSS rescore
  21. 2026-08-11 02:19 UTCEG score recompute
  22. 2026-08-11 02:19 UTCGHSA enrichment
  23. 2026-08-11 00:00 UTCEPSS rescore
  24. 2026-08-10 02:58 UTCEG score recompute
  25. 2026-08-10 02:58 UTCGHSA enrichment
  26. 2026-08-09 13:46 UTCEPSS rescore
  27. 2026-08-09 03:38 UTCEG score recompute
  28. 2026-08-09 03:38 UTCGHSA enrichment
  29. 2026-08-08 16:37 UTCEPSS rescore
  30. 2026-08-08 04:17 UTCEG score recompute
  31. 2026-08-08 04:17 UTCGHSA enrichment
  32. 2026-08-07 04:56 UTCEG score recompute
  33. 2026-08-07 04:56 UTCGHSA enrichment
  34. 2026-08-06 13:46 UTCEPSS rescore
  35. 2026-08-06 05:35 UTCEG score recompute
  36. 2026-08-06 05:35 UTCGHSA enrichment
  37. 2026-08-05 19:17 UTCEPSS rescore
  38. 2026-08-05 06:14 UTCEG score recompute
  39. 2026-08-05 06:14 UTCGHSA enrichment
  40. 2026-08-04 15:10 UTCEPSS rescore
  41. 2026-08-04 10:38 UTCEPSS rescore
  42. 2026-08-04 05:53 UTCEG score recompute
  43. 2026-08-04 05:53 UTCGHSA enrichment
  44. 2026-08-03 10:36 UTCEPSS rescore
  45. 2026-08-03 06:32 UTCGHSA enrichment
  46. 2026-08-02 07:10 UTCEG score recompute
  47. 2026-08-02 07:10 UTCGHSA enrichment
  48. 2026-08-02 02:27 UTCEPSS rescore
  49. 2026-08-01 07:49 UTCEG score recompute
  50. 2026-08-01 07:49 UTCGHSA enrichment
  51. 2026-08-01 04:16 UTCEPSS rescore
  52. 2026-07-31 08:28 UTCEG score recompute
  53. 2026-07-31 08:28 UTCGHSA enrichment
  54. 2026-07-30 16:28 UTCEPSS rescore
  55. 2026-07-30 09:06 UTCEG score recompute
  56. 2026-07-30 09:06 UTCGHSA enrichment
  57. 2026-07-30 01:30 UTCEPSS rescore
  58. 2026-07-29 09:45 UTCEG score recompute
  59. 2026-07-29 09:45 UTCGHSA enrichment
  60. 2026-07-28 10:24 UTCEG score recompute
  61. 2026-07-28 10:24 UTCGHSA enrichment
  62. 2026-07-27 14:13 UTCEPSS rescore
  63. 2026-07-27 11:02 UTCEG score recompute
  64. 2026-07-27 11:02 UTCGHSA enrichment
  65. 2026-07-26 14:54 UTCEPSS rescore
  66. 2026-07-26 14:54 UTCEPSS rescore
  67. 2026-07-26 11:39 UTCEG score recompute
  68. 2026-07-26 11:39 UTCGHSA enrichment
  69. 2026-07-25 14:18 UTCEPSS rescore
  70. 2026-07-25 14:18 UTCEPSS rescore
  71. 2026-07-24 14:17 UTCEPSS rescore
  72. 2026-07-24 14:17 UTCEPSS rescore
  73. 2026-07-23 14:18 UTCEPSS rescore
  74. 2026-07-23 14:18 UTCEPSS rescore
  75. 2026-07-23 03:10 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-38974?
CVE-2026-38974 is a medium vulnerability published on July 15, 2026. Dulwich through 1.1.0 was found to be missing SSH host key verification in contrib/paramiko_vendor.py.
When was CVE-2026-38974 disclosed?
CVE-2026-38974 was first published in the National Vulnerability Database on July 15, 2026, with the most recent update on July 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-38974 actively exploited?
CVE-2026-38974 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 90.8% of all scored CVEs.
What is the CVSS score of CVE-2026-38974?
CVE-2026-38974 has a CVSS v3.1 base score of 5.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-38974?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-38974, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-38974

Explore →

Is Your Infrastructure Affected by CVE-2026-38974?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs