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Review reviewHigh

CVE-2026-39852

quarkusio quarkus, Cryostat 4 on RHEL 9, HawtIO HawtIO 4.4.0

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 t...

CVSS
8.8
EPSS
0.44%
36.5% percentile
CISA KEV
Not listed
Published
2026.05.06
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.44%
Technical severityCVSS 8.8

Vulnerability overview

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 t...

Affected product and versions

Product
quarkusio quarkus, Cryostat 4 on RHEL 9, HawtIO HawtIO 4.4.0
Affected versions
>= < 3.20.6.1, >= >= 3.27.3.0, < 3.27.3.1, >= >= 3.34.0, < 3.34.7, >= >= 3.35.0, < 3.35.2, < 3.20.6.1, >= 3.21.0 < 3.27.3.1, >= 3.28.0 < 3.33.1.1, >= 3.34.0 < 3.34.7, >= 3.35.0 < 3.35.2
Fixed versions
3.20.6.1, 3.27.3.1, 3.33.1.1, 3.34.7, 3.35.2

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that quarkusio quarkus, Cryostat 4 on RHEL 9, HawtIO HawtIO 4.4.0 and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
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
CWE
CWE-551, CWE-863
CVE-2026-39852 — quarkusio quarkus, Cryostat 4 on RHEL 9, HawtIO HawtIO 4.4.0 | SECUFOCUS NOW