HTTP Request Smuggling Affecting grafana-loki package, versions *


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.43% (38th percentile)

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  • Snyk IDSNYK-CENTOS8-GRAFANALOKI-22299673
  • published8 Nov 2026
  • disclosed28 Oct 2026

Introduced: 28 Oct 2026

NewCVE-2026-118264  (opens in a new tab)
CWE-444  (opens in a new tab)

How to fix?

There is no fixed version for Centos:8 grafana-loki.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grafana-loki package and not the grafana-loki package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

Echo is a Go web framework. From 4.0.0 until 4.16.1 and 5.4.1, Echo's Proxy middleware selects a raw tunnel from a client WebSocket upgrade request before verifying that the configured upstream accepted the upgrade. If the upstream rejects the upgrade with an ordinary keep-alive response, later HTTP requests on the connection are sent directly to that upstream without passing through Echo's router or route-specific middleware. This can bypass authentication or authorization enforced only by Echo routes, but requires an accessible proxy route, a cooperating rejected-upgrade response, and a target without independent upstream authorization. This issue is fixed in 4.16.1 and 5.4.1.

CVSS Base Scores

version 3.1