CVE-2026-50559

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.7%, top 50% 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, secondary
Trending — 3 sources updated this weekElevated
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: Elevated riskExposed: 0

A fix is available — apply it.

Quarkus is a Java framework for building cloud-native applications. Prior to versions 3.37.0, 3.36.3, 3.33.2.1, 3.33.3, 3.27.4.1, 3.27.5, and 3.20.6.2, Quarkus HTTP path-based authorization policies can be bypassed using encoded semicolons (%3B) to smuggle matrix parameters past the security layer, and using encoded slashes (%2F) or backslashes (%5C) to access protected static resources. This is a distinct issue from CVE-2026-39852, which addressed only literal semicolon stripping. Versions 3.37.0, 3.36.3, 3.33.2.1, 3.33.3, 3.27.4.1, 3.27.5, and 3.20.6.2 contain a patch.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
65(Attend)
EG Risk 65/100SSVC: Attend

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%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
50%
KEV
Not listed

Published

June 19, 2026

Last Modified

August 13, 2026

Advisory Details (1)

Auto-updated Jun 19, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Authentication/Authorization Bypass via Advanced Path Normalization Vulnerabilities · Advisory · quarkusio/quarkus · GitHub

https://github.com/quarkusio/quarkus/security/advisories/GHSA-qcxp-gm7m-4j5v

Vendor Advisories for CVE-2026-50559(9)

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-http2026-08-12redhat
redhatcryostat/jfr-datasource-rhel9:4.2.0-132026-07-29redhat
redhatdevspaces/multicluster-redirector-rhel9:17829890272026-07-08redhat

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-http3.37.0.CR13.37.0—

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 41× 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 243 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-50559?
CVE-2026-50559 is a high vulnerability published on June 19, 2026. Quarkus is a Java framework for building cloud-native applications. Prior to versions 3.37.0, 3.36.3, 3.33.2.1, 3.33.3, 3.27.4.1, 3.27.5, and 3.20.6.2, Quarkus HTTP path-based authorization policies can be bypassed using encoded semicolons (%3B) to smuggle matrix parameters past the security layer,…
When was CVE-2026-50559 disclosed?
CVE-2026-50559 was first published in the National Vulnerability Database on June 19, 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-2026-50559 actively exploited?
CVE-2026-50559 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 49.6% of all scored CVEs.
What is the CVSS score of CVE-2026-50559?
CVE-2026-50559 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-50559?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-50559, 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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