CVE-2026-73553: Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, When…

PriorityP351high7.5CVSS 3.1

AVNACHPRNUINSCCHILAN

EPSS

0.51%

42.4th percentile

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, When ignore_path_parameters_in_path_matching is enabled, Envoy's router strips the semicolon suffix before matching but the RBAC url_path matcher evaluates the raw path. A downstream request such as /admin;x can therefore miss a DENY rule for /admin while the router still selects the protected /admin backend. The inconsistent canonicalization allows an unauthenticated client to bypass path-based authorization. The relevant scope boundary is that the route option and a path-based RBAC rule must both be present, and the protected route must match after stripping. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.

Affected

8 ranges

Vendor	Product	Version range	Fixed in
envoyproxy	envoy	< 1.36.10	1.36.10
envoyproxy	envoy	—	—
envoyproxy	envoy	—	—
envoyproxy	envoy	—	—
envoyproxy	envoy	>= 1.37.0 < 1.37.6	1.37.6
envoyproxy	envoy	>= 1.38.0 < 1.38.4	1.38.4
envoyproxy	envoy	>= 1.39.0 < 1.39.1	1.39.1
openshift-service-mesh	istio-proxyv2-rhel9	—	—

CVSS provenance

nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N

vendor_redhat7.5HIGH

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