CVE-2026-39852

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 HIGH

8.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

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

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:quarkus:quarkus::::::::
	cpe:2.3:a:quarkus:quarkus::::::::
	cpe:2.3:a:quarkus:quarkus::::::::
	cpe:2.3:a:quarkus:quarkus::::::::
	cpe:2.3:a:quarkus:quarkus::::::::

History

08 May 2026, 17:18

Type	Values Removed	Values Added
CPE		cpe:2.3:a:quarkus:quarkus::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 8.2
References	~~() https://github.com/quarkusio/quarkus/security/advisories/GHSA-rc95-pcm8-65v9 -~~	() https://github.com/quarkusio/quarkus/security/advisories/GHSA-rc95-pcm8-65v9 - Vendor Advisory
First Time		Quarkus Quarkus quarkus

05 May 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-05 21:16

Updated : 2026-05-08 17:18

NVD link : CVE-2026-39852

Mitre link : CVE-2026-39852

CVE.ORG link : CVE-2026-39852

JSON object : View

Products Affected

quarkus

quarkus

CWE

CWE-863

Incorrect Authorization

{"id": "CVE-2026-39852", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.2, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 4.2, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.8, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "LOW", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "published": "2026-05-05T21:16:22.823", "references": [{"url": "https://github.com/quarkusio/quarkus/security/advisories/GHSA-rc95-pcm8-65v9", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-863"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-05-08T17:18:38.830", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:quarkus:quarkus:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E5AE56EF-94DF-4552-B4E4-B72B532DE04C", "versionEndExcluding": "3.20.6.1"}, {"criteria": "cpe:2.3:a:quarkus:quarkus:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DE8ACEA5-1401-493F-A1E5-0D9D87174161", "versionEndExcluding": "3.27.3.1", "versionStartIncluding": "3.21.0"}, {"criteria": "cpe:2.3:a:quarkus:quarkus:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E37E4AF5-6CDF-47E7-998C-C8744296A503", "versionEndExcluding": "3.33.1.1", "versionStartIncluding": "3.28.0"}, {"criteria": "cpe:2.3:a:quarkus:quarkus:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6179CFEC-6CBF-45D7-9DE5-F47CB1D36F99", "versionEndExcluding": "3.34.7", "versionStartIncluding": "3.34.0"}, {"criteria": "cpe:2.3:a:quarkus:quarkus:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4397C81B-D8AF-4DD5-86B4-70CE00462BD3", "versionEndExcluding": "3.35.2", "versionStartIncluding": "3.35.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}