CVE-2026-50559 (GCVE-0-2026-50559)

Vulnerability from cvelistv5 – Published: 2026-06-19 20:26 – Updated: 2026-06-19 20:26
VLAI
Title
Authentication/Authorization Bypass via Advanced Path Normalization Vulnerabilities
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
Assigner
References
Impacted products
Vendor Product Version
quarkusio quarkus Affected: >= 3.36.0, < 3.36.3
Affected: >= 3.33.0, < 3.33.2.1
Affected: >= 3.27.0, < 3.27.4.1
Affected: < 3.20.6.2
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "quarkus",
          "vendor": "quarkusio",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 3.36.0, \u003c 3.36.3"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.33.0, \u003c 3.33.2.1"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.27.0, \u003c 3.27.4.1"
            },
            {
              "status": "affected",
              "version": "\u003c 3.20.6.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-287",
              "description": "CWE-287: Improper Authentication",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-863",
              "description": "CWE-863: Incorrect Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-19T20:26:39.322Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/quarkusio/quarkus/security/advisories/GHSA-qcxp-gm7m-4j5v",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/quarkusio/quarkus/security/advisories/GHSA-qcxp-gm7m-4j5v"
        }
      ],
      "source": {
        "advisory": "GHSA-qcxp-gm7m-4j5v",
        "discovery": "UNKNOWN"
      },
      "title": "Authentication/Authorization Bypass via Advanced Path Normalization Vulnerabilities"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-50559",
    "datePublished": "2026-06-19T20:26:39.322Z",
    "dateReserved": "2026-06-04T21:34:34.426Z",
    "dateUpdated": "2026-06-19T20:26:39.322Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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