CVE-2026-40984

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-09. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

In Micrometer, it is possible for a user to provide specially crafted HTTP requests that may cause a denial-of-service (DoS) condition.

Affected versions: micrometer-core 1.16.0 through 1.16.5; 1.15.0 through 1.15.11; 1.14.0 through 1.14.15; 1.13.0 through 1.13.18; 1.9.0 through 1.9.17. micrometer-jetty11 1.16.0 through 1.16.5; 1.15.0 through 1.15.11; 1.14.0 through 1.14.15; 1.13.0 through 1.13.18. micrometer-jetty12 1.16.0 through 1.16.5; 1.15.0 through 1.15.11; 1.14.0 through 1.14.15; 1.13.0 through 1.13.18.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
53%
KEV
Not listed

Published

June 9, 2026

Last Modified

August 13, 2026

Advisory Details (1)

Auto-updated Jun 9, 2026
No patch confirmed yet.
generic

CVE-2026-40984: Micrometer HTTP server instrumentations DoS vulnerability

https://spring.io/security/cve-2026-40984

Vendor Advisories for CVE-2026-40984(7)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatmicrometer-core2026-08-12redhat
redhatrhbk/keycloak-rhel9-operator:26.6-112026-08-05redhat
redhatrhbk-rhel9-operator/rhbk-rhel9-operator2026-08-05redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(3 across 1 ecosystem)
Maven(3)
PackageVulnerable rangeFixed inDependents
io.micrometer:micrometer-core0.10.0.RELEASE ... 1.9.9 (153 versions)1.15.12—
io.micrometer:micrometer-jetty111.10.0 ... 1.13.9 (57 versions)1.15.12—
io.micrometer:micrometer-jetty121.13.0 ... 1.13.9 (16 versions)1.15.12—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 120× 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 239 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-40984?
CVE-2026-40984 is a high vulnerability published on June 9, 2026. In Micrometer, it is possible for a user to provide specially crafted HTTP requests that may cause a denial-of-service (DoS) condition. Affected versions: micrometer-core 1.16.0 through 1.16.5; 1.15.0 through 1.15.11; 1.14.0 through 1.14.15; 1.13.0 through 1.13.18; 1.9.0 through 1.9.17.…
When was CVE-2026-40984 disclosed?
CVE-2026-40984 was first published in the National Vulnerability Database on June 9, 2026, with the most recent update on August 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40984 actively exploited?
CVE-2026-40984 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 47.1% of all scored CVEs.
What is the CVSS score of CVE-2026-40984?
CVE-2026-40984 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-40984?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40984, 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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