{"cve":"CVE-2026-39852","nvd":{"published":"2026-05-05T21:16:22.823","modified":"2026-08-17T12:18:23.367","status":"Modified","description":"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_v4":{"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","score":8.8},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","score":8.2},"cwes":["CWE-863","CWE-551"],"references":["https://github.com/quarkusio/quarkus/security/advisories/GHSA-rc95-pcm8-65v9","https://access.redhat.com/errata/RHSA-2026:11720","https://access.redhat.com/errata/RHSA-2026:11721","https://access.redhat.com/errata/RHSA-2026:13631","https://access.redhat.com/errata/RHSA-2026:17789"],"products":["quarkus:quarkus"],"source":"nvd","synced_at":"2026-10-19T22:33:55.586217763+00:00"},"epss":{"cve":"CVE-2026-39852","score":0.00484,"percentile":0.4174,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-rc95-pcm8-65v9","url":"https://osv.dev/vulnerability/GHSA-rc95-pcm8-65v9","summary":"Quarkus has Authentication/Authorization bypasses","modified":"2026-09-10T03:50:47.474405444Z","packages":[{"ecosystem":"Maven","name":"io.quarkus:quarkus-vertx-http","purl":"pkg:maven/io.quarkus/quarkus-vertx-http","ranges":["<3.20.6.1"],"fixed":["3.20.6.1"]},{"ecosystem":"Maven","name":"io.quarkus:quarkus-vertx-http","purl":"pkg:maven/io.quarkus/quarkus-vertx-http","ranges":[">=3.21.0 <3.27.3.1"],"fixed":["3.27.3.1"]},{"ecosystem":"Maven","name":"io.quarkus:quarkus-vertx-http","purl":"pkg:maven/io.quarkus/quarkus-vertx-http","ranges":[">=3.30.0 <3.33.1.1"],"fixed":["3.33.1.1"]},{"ecosystem":"Maven","name":"io.quarkus:quarkus-vertx-http","purl":"pkg:maven/io.quarkus/quarkus-vertx-http","ranges":[">=3.34.0 <3.35.1.1"],"fixed":["3.35.1.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}