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CVE-2026-6540 Affecting calico-3.29-typha-client package, versions *

Severity

 Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.37% (30th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-CALICO329TYPHACLIENT-18555344
  • published6 Aug 2026
  • disclosed30 Jul 2026
Report a new vulnerability Found a mistake?

Introduced: 30 Jul 2026

NewCVE-2026-6540  (opens in a new tab)

How to fix?

There is no fixed version for Minimos:latest calico-3.29-typha-client.

NVD Description

Note: Versions mentioned in the description apply only to the upstream calico-3.29-typha-client package and not the calico-3.29-typha-client package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

Calico's Application Layer Policy (disabled by default), which enforces HTTP rules through Dikastes, fails to perform URL path normalization. As a result, HTTP requests using path-traversal segments, encoded slashes, or repeated slashes are not correctly evaluated by Prefix path rules. Dikastes authorizes the request under the permitted prefix while the downstream workload or a fronting proxy normalizes the path and serves the restricted endpoint. An attacker with network access and no special RBAC can potentially reach HTTP endpoints the policy was intended to restrict.