Bug 2512095 (CVE-2026-73511) - CVE-2026-73511 envoy: envoy: path matching bypass via per-segment parameters not stripped by router
Summary: CVE-2026-73511 envoy: envoy: path matching bypass via per-segment parameters ...
Keywords:
Status: NEW
Alias: CVE-2026-73511
Deadline: 2026-08-26
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-06 15:01 UTC by OSIDB Bzimport
Modified: 2026-08-31 16:29 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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Description OSIDB Bzimport 2026-08-06 15:01:46 UTC 
Path matching for paths containing per-segment parameters was incorrect. Envoy and backends that strip matrix parameters could previously select different resources for the same request, potentially bypassing path-based service selection or authentication. The fix applies parameter stripping to each path segment.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N (5.3)

Embargoed until 2026-08-26 13:00 GMT per Envoy upstream disclosure. PSIRTSUPT-21132.
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