onyx --cves cve-2026-73511
CVE-2026-73511
- score
- 12.6
- cvss
- 5.3
- epss
- 0.4%
- published
- 2026-09-21
- kev added
- —
- first seen
Envoy < 1.36.10, < 1.37.6, < 1.38.4, and < 1.39.1 contains an access control bypass caused by improper path parameter handling in path matching, letting remote clients access protected resources via fallback selection, exploit requires backend that strips semicolon parameters per segment.
Timeline
How this CVE moved toward exploitation. Chart: last 30 days — trend score, EPSS, community mentions per day; hover the event lane.
- Published
- Tracked by Onyx
- Public PoC
Exploit availability
Public PoC flagged by vulnx; no direct exploit link among the citations.
Weaknesses
References 9
- https://github.com/envoyproxy/envoy/commit/50f7bfa48dccfee339822e9846b2b8053e07d325
- https://github.com/envoyproxy/envoy/commit/fcb663752c7055257f5dcc8b6ce6c7c905ebb1ff
- https://github.com/envoyproxy/envoy/releases/tag/v1.37.6
- https://github.com/envoyproxy/envoy/releases/tag/v1.38.4
- https://github.com/envoyproxy/envoy/releases/tag/v1.39.1
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-m745-gh6x-349x
- https://github.com/envoyproxy/envoy/commit/26d5
- https://github.com/envoyproxy/envoy/commit/b205d1f4982e14ce5693ba94ef84d37e7155e050
- https://github.com/envoyproxy/envoy/releases/tag/v1.36.10