CVE-2026-41847

MEDIUMNVD 5.34.8▼
EchelonGraph scoreHIGH confidence

Score 4.8 from GitHub Security Advisory published 2026-06-09. NVD baseline CVSS 5.3; sources differ by 0.5.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0

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

Spring WebFlux applications may be vulnerable to a security bypass when using the Kotlin Router DSL.

Affected versions: Spring Framework 5.3.0 through 5.3.48.

CVSS v3
5.3
EG Score
4.8(high)
EPSS
6.2%
KEV
Not listed

Published

June 9, 2026

Last Modified

June 11, 2026

Advisory Details (1)

Auto-updated Jun 14, 2026
No patch confirmed yet.
generic

CVE-2026-41847: Spring Framework Security Filter Bypass in WebFlux Kotlin Router DSL

https://spring.io/security/cve-2026-41847

Vendor Advisories for CVE-2026-41847(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 20× in last 7d / 85× 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 16:27 UTCEPSS rescore
  3. 2026-07-06 02:23 UTCEPSS rescore
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-05 22:19 UTCEG score recompute
  6. 2026-07-05 22:19 UTCGHSA enrichment
  7. 2026-07-05 02:30 UTCEPSS rescore
  8. 2026-07-04 19:56 UTCEG score recompute
  9. 2026-07-04 19:56 UTCGHSA enrichment
  10. 2026-07-04 06:31 UTCEPSS rescore
  11. 2026-07-03 16:52 UTCEG score recompute
  12. 2026-07-03 16:52 UTCGHSA enrichment
  13. 2026-07-02 14:30 UTCEG score recompute
  14. 2026-07-02 14:30 UTCGHSA enrichment
  15. 2026-07-01 15:06 UTCEPSS rescore
  16. 2026-07-01 12:06 UTCEG score recompute
  17. 2026-07-01 12:06 UTCGHSA enrichment
  18. 2026-06-30 23:22 UTCEPSS rescore
  19. 2026-06-30 09:44 UTCEG score recompute
  20. 2026-06-30 09:44 UTCGHSA enrichment
  21. 2026-06-29 14:06 UTCEPSS rescore
  22. 2026-06-29 07:20 UTCEG score recompute
  23. 2026-06-29 07:20 UTCGHSA enrichment
  24. 2026-06-28 14:07 UTCEPSS rescore
  25. 2026-06-28 04:56 UTCEPSS rescore
Show 60 more
  1. 2026-06-28 04:17 UTCEG score recompute
  2. 2026-06-28 04:17 UTCGHSA enrichment
  3. 2026-06-27 03:08 UTCEPSS rescore
  4. 2026-06-27 01:53 UTCEG score recompute
  5. 2026-06-27 01:53 UTCGHSA enrichment
  6. 2026-06-25 23:31 UTCEG score recompute
  7. 2026-06-25 23:31 UTCGHSA enrichment
  8. 2026-06-25 13:49 UTCEPSS rescore
  9. 2026-06-25 13:49 UTCEPSS rescore
  10. 2026-06-24 21:08 UTCEG score recompute
  11. 2026-06-24 21:08 UTCGHSA enrichment
  12. 2026-06-24 14:05 UTCEPSS rescore
  13. 2026-06-23 21:33 UTCEPSS rescore
  14. 2026-06-23 16:02 UTCEG score recompute
  15. 2026-06-23 16:02 UTCGHSA enrichment
  16. 2026-06-22 14:25 UTCEPSS rescore
  17. 2026-06-22 14:25 UTCEPSS rescore
  18. 2026-06-22 13:39 UTCEG score recompute
  19. 2026-06-22 13:39 UTCGHSA enrichment
  20. 2026-06-21 14:56 UTCEPSS rescore
  21. 2026-06-21 14:56 UTCEPSS rescore
  22. 2026-06-21 10:44 UTCEG score recompute
  23. 2026-06-21 10:44 UTCGHSA enrichment
  24. 2026-06-21 01:59 UTCEPSS rescore
  25. 2026-06-20 07:50 UTCEG score recompute
  26. 2026-06-20 07:50 UTCGHSA enrichment
  27. 2026-06-19 19:25 UTCEPSS rescore
  28. 2026-06-19 02:14 UTCEG score recompute
  29. 2026-06-19 02:13 UTCGHSA enrichment
  30. 2026-06-18 17:52 UTCEPSS rescore
  31. 2026-06-18 17:52 UTCEPSS rescore
  32. 2026-06-17 23:47 UTCEG score recompute
  33. 2026-06-17 23:47 UTCGHSA enrichment
  34. 2026-06-17 17:53 UTCEPSS rescore
  35. 2026-06-16 21:25 UTCEG score recompute
  36. 2026-06-16 21:25 UTCGHSA enrichment
  37. 2026-06-16 17:52 UTCEPSS rescore
  38. 2026-06-15 19:01 UTCEG score recompute
  39. 2026-06-15 19:01 UTCGHSA enrichment
  40. 2026-06-15 17:49 UTCEPSS rescore
  41. 2026-06-14 16:38 UTCEG score recompute
  42. 2026-06-14 16:38 UTCGHSA enrichment
  43. 2026-06-13 23:00 UTCEPSS rescore
  44. 2026-06-13 14:16 UTCEG score recompute
  45. 2026-06-13 14:16 UTCGHSA enrichment
  46. 2026-06-12 23:12 UTCEPSS rescore
  47. 2026-06-12 23:12 UTCEPSS rescore
  48. 2026-06-12 11:53 UTCEG score recompute
  49. 2026-06-12 11:53 UTCGHSA enrichment
  50. 2026-06-11 17:56 UTCNVD updateCVSS v3 → 5.3
  51. 2026-06-11 14:00 UTCEPSS rescore
  52. 2026-06-11 09:31 UTCEG score recompute
  53. 2026-06-11 09:31 UTCGHSA enrichment
  54. 2026-06-10 22:18 UTCEPSS rescore
  55. 2026-06-10 13:22 UTCEPSS rescore
  56. 2026-06-10 13:22 UTCEPSS rescore
  57. 2026-06-10 07:09 UTCEG score recompute
  58. 2026-06-10 07:09 UTCGHSA enrichment
  59. 2026-06-09 04:46 UTCEG score recompute
  60. 2026-06-09 04:45 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-41847?
CVE-2026-41847 is a medium vulnerability published on June 9, 2026. Spring WebFlux applications may be vulnerable to a security bypass when using the Kotlin Router DSL. Affected versions: Spring Framework 5.3.0 through 5.3.48.
When was CVE-2026-41847 disclosed?
CVE-2026-41847 was first published in the National Vulnerability Database on June 9, 2026, with the most recent update on June 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-41847 actively exploited?
CVE-2026-41847 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-41847?
CVE-2026-41847 has a CVSS v3 base score of 5.3 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 4.8.
How do I remediate CVE-2026-41847?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-41847, 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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