CVE-2026-39852

HIGHNVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under NVD CVSS v3. EPSS exploit probability: 0.0%, top 96% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
8.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.2Exploit: NoneExposed: 0

A fix is available — apply it.

Quarkus is a Java framework for building cloud-native applications. In versions prior to 3.20.6.1, 3.27.3.1, 3.33.1.1, 3.35.1.1, 3.34.7, and 3.35.2, a path normalization inconsistency between the security layer and the routing layer allows unauthenticated or lower-privileged users to bypass HTTP path-based authorization policies. Quarkus's security layer performs authorization checks on the raw URL path which preserves matrix parameters (semicolons), while RESTEasy Reactive's routing layer strips matrix parameters before matching endpoints. An attacker can append a semicolon and arbitrary text to a request URL (e.g., /api/admin;anything) to bypass policies protecting /api/admin while still routing to the protected endpoint. This issue has been fixed in versions 3.20.6.1, 3.27.3.1, 3.33.1.1, 3.35.1.1, 3.34.7, and 3.35.2.

CVSS v3
8.2
EG Score
8.2(medium)
EPSS
35.7%
KEV
Not listed

Published

May 5, 2026

Last Modified

July 3, 2026

Advisory Details (1)

Auto-updated May 5, 2026
Patch available. Sources: github.
github Patch Available

Authentication/Authorization bypasses · Advisory · quarkusio/quarkus · GitHub

https://github.com/quarkusio/quarkus/security/advisories/GHSA-rc95-pcm8-65v9

Vendor Advisories for CVE-2026-39852(6)

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
redhatquarkus-vertx-http2026-06-10redhat
redhatcryostat/jfr-datasource-rhel9:4.2.0-92026-05-26redhat
redhatpatch2026-05-05redhat

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

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
io.quarkus:quarkus-vertx-http3.34.0 ... 3.35.1 (11 versions)3.35.1.1—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 43× 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 126 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-39852?
CVE-2026-39852 is a high vulnerability published on May 5, 2026. Quarkus is a Java framework for building cloud-native applications. In versions prior to 3.20.6.1, 3.27.3.1, 3.33.1.1, 3.35.1.1, 3.34.7, and 3.35.2, a path normalization inconsistency between the security layer and the routing layer allows unauthenticated or lower-privileged users to bypass HTTP…
When was CVE-2026-39852 disclosed?
CVE-2026-39852 was first published in the National Vulnerability Database on May 5, 2026, with the most recent update on July 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-39852 actively exploited?
CVE-2026-39852 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 35.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-39852?
CVE-2026-39852 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-39852?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-39852, 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.

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