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: 0.5%, top 62% 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: 0%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
0%
EPSS %ILE
38%
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 24× in last 7d / 109× 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 206 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

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 0% probability of exploitation in the next 30 days, which ranks it in the top 61.5% 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-50559

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