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.
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Thu, 30 Jul 2026 17:30:00 +0000
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ssvc
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Thu, 30 Jul 2026 17:00:00 +0000
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Tigera
Tigera calico Tigera calico Cloud Tigera calico Enterprise |
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| Vendors & Products |
Tigera
Tigera calico Tigera calico Cloud Tigera calico Enterprise |
Thu, 30 Jul 2026 15:00:00 +0000
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| Description | 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. | |
| Title | L7 policy bypass via unnormalized HTTP path matching | |
| Weaknesses | CWE-22 CWE-23 |
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| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: Tigera
Published:
Updated: 2026-07-30T16:12:07.691Z
Reserved: 2026-04-17T17:41:32.750Z
Link: CVE-2026-6540
Updated: 2026-07-30T16:12:04.481Z
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OpenCVE Enrichment
Updated: 2026-07-30T16:45:03Z