CVE-2026-47838

HIGHNVD 8.16.8▼
EchelonGraph scoreMEDIUM confidence

Score 6.8 from GitHub Security Advisory published 2026-06-10. NVD baseline CVSS 8.1; sources differ by 1.3.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.1Exploit: NoneExposed: 0

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

SubjectDnX509PrincipalExtractor does not correctly handle certain malformed X.509 certificate CN values, which can lead to reading the wrong value for the username. In a carefully crafted certificate, this can lead to an attacker impersonating another user.

Affected versions: Spring Security 5.7.0 through 5.7.24; 5.8.0 through 5.8.26; 6.3.0 through 6.3.17; 6.4.0 through 6.4.17; 6.5.0 through 6.5.10.

CVSS v3
8.1
EG Score
6.8(medium)
EPSS
1.9%
KEV
Not listed

Published

June 10, 2026

Last Modified

June 30, 2026

Advisory Details (1)

Auto-updated Jun 13, 2026
No patch confirmed yet.
generic

CVE-2026-47838: Unauthorized User Impersonation when Using X.509 Client Certificates

https://spring.io/security/cve-2026-47838

Vendor Advisories for CVE-2026-47838(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 80× 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.

  1. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 03:49 UTCEG score recompute
  3. 2026-07-06 02:23 UTCEPSS rescore
  4. 2026-07-05 02:18 UTCEG score recompute
  5. 2026-07-04 06:31 UTCEPSS rescore
  6. 2026-07-04 01:28 UTCEG score recompute
  7. 2026-07-02 23:40 UTCEG score recompute
  8. 2026-07-01 22:50 UTCEG score recompute
  9. 2026-07-01 15:07 UTCEPSS rescore
  10. 2026-06-30 23:22 UTCEPSS rescore
  11. 2026-06-30 21:31 UTCEG score recompute
  12. 2026-06-30 21:31 UTCGHSA enrichment
  13. 2026-06-29 20:31 UTCEG score recompute
  14. 2026-06-29 20:31 UTCGHSA enrichment
  15. 2026-06-28 19:41 UTCEG score recompute
  16. 2026-06-28 19:41 UTCGHSA enrichment
  17. 2026-06-28 14:07 UTCEPSS rescore
  18. 2026-06-28 04:56 UTCEPSS rescore
  19. 2026-06-28 04:56 UTCEPSS rescore
  20. 2026-06-27 18:51 UTCEG score recompute
  21. 2026-06-27 18:51 UTCGHSA enrichment
  22. 2026-06-27 03:08 UTCEPSS rescore
  23. 2026-06-26 18:00 UTCEG score recompute
  24. 2026-06-26 18:00 UTCGHSA enrichment
  25. 2026-06-25 17:08 UTCEG score recompute
Show 55 more
  1. 2026-06-25 17:08 UTCGHSA enrichment
  2. 2026-06-25 13:49 UTCEPSS rescore
  3. 2026-06-24 16:18 UTCEG score recompute
  4. 2026-06-24 16:18 UTCGHSA enrichment
  5. 2026-06-24 14:05 UTCEPSS rescore
  6. 2026-06-23 21:33 UTCEPSS rescore
  7. 2026-06-23 21:33 UTCEPSS rescore
  8. 2026-06-23 15:27 UTCEG score recompute
  9. 2026-06-23 15:27 UTCGHSA enrichment
  10. 2026-06-22 14:25 UTCEPSS rescore
  11. 2026-06-22 14:25 UTCEPSS rescore
  12. 2026-06-22 13:17 UTCEG score recompute
  13. 2026-06-22 13:16 UTCGHSA enrichment
  14. 2026-06-21 14:56 UTCEPSS rescore
  15. 2026-06-21 14:56 UTCEPSS rescore
  16. 2026-06-21 11:02 UTCEG score recompute
  17. 2026-06-21 11:02 UTCGHSA enrichment
  18. 2026-06-21 01:59 UTCEPSS rescore
  19. 2026-06-21 01:59 UTCEPSS rescore
  20. 2026-06-20 10:11 UTCEG score recompute
  21. 2026-06-20 10:10 UTCGHSA enrichment
  22. 2026-06-19 19:26 UTCEPSS rescore
  23. 2026-06-19 19:26 UTCEPSS rescore
  24. 2026-06-19 09:17 UTCEG score recompute
  25. 2026-06-19 09:17 UTCGHSA enrichment
  26. 2026-06-18 17:52 UTCEPSS rescore
  27. 2026-06-18 17:52 UTCEPSS rescore
  28. 2026-06-18 08:24 UTCEG score recompute
  29. 2026-06-18 08:23 UTCGHSA enrichment
  30. 2026-06-17 19:50 UTCNVD updateCVSS v3 → 8.1 · severity → HIGH
  31. 2026-06-17 17:53 UTCEPSS rescore
  32. 2026-06-17 07:26 UTCEG score recompute
  33. 2026-06-17 07:26 UTCGHSA enrichment
  34. 2026-06-16 06:20 UTCEG score recompute
  35. 2026-06-16 06:20 UTCGHSA enrichment
  36. 2026-06-15 17:49 UTCEPSS rescore
  37. 2026-06-15 17:49 UTCEPSS rescore
  38. 2026-06-15 05:29 UTCEG score recompute
  39. 2026-06-15 05:29 UTCGHSA enrichment
  40. 2026-06-14 23:18 UTCEPSS rescore
  41. 2026-06-14 04:40 UTCEG score recompute
  42. 2026-06-14 04:39 UTCGHSA enrichment
  43. 2026-06-13 23:00 UTCEPSS rescore
  44. 2026-06-13 03:48 UTCEG score recompute
  45. 2026-06-13 03:48 UTCGHSA enrichment
  46. 2026-06-12 23:12 UTCEPSS rescore
  47. 2026-06-12 23:12 UTCEPSS rescore
  48. 2026-06-12 02:57 UTCEG score recompute
  49. 2026-06-12 02:57 UTCGHSA enrichment
  50. 2026-06-11 14:00 UTCEPSS rescore
  51. 2026-06-11 02:07 UTCEG score recompute
  52. 2026-06-11 02:07 UTCGHSA enrichment
  53. 2026-06-10 22:18 UTCEPSS rescore
  54. 2026-06-10 01:17 UTCEG score recompute
  55. 2026-06-10 01:17 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-47838?
CVE-2026-47838 is a high vulnerability published on June 10, 2026. SubjectDnX509PrincipalExtractor does not correctly handle certain malformed X.509 certificate CN values, which can lead to reading the wrong value for the username. In a carefully crafted certificate, this can lead to an attacker impersonating another user. Affected versions: Spring Security 5.7.0…
When was CVE-2026-47838 disclosed?
CVE-2026-47838 was first published in the National Vulnerability Database on June 10, 2026, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-47838 actively exploited?
CVE-2026-47838 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-47838?
CVE-2026-47838 has a CVSS v3 base score of 8.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 6.8.
How do I remediate CVE-2026-47838?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-47838, 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

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