Description
Interpretation Conflict, leading to Incorrect Authorization vulnerability in Apache APISIX.



With match_uri_encoded_slash enabled and skip_mtls_uri_regex
configured, a client without a certificate can reach an upstream
behind a route that requires one, limited to request paths that decode
to an exempted URI. This issue affects Apache APISIX: from 3.18.0 through 3.19.0.



Users are recommended to upgrade to version 3.20.0, which fixes the issue.
Published: 2026-11-13
Score: 6.3 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
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Remediation

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History

Fri, 13 Nov 2026 18:00:00 +0000

Type Values Removed Values Added
Description Interpretation Conflict, leading to Incorrect Authorization vulnerability in Apache APISIX. With match_uri_encoded_slash enabled and skip_mtls_uri_regex configured, a client without a certificate can reach an upstream behind a route that requires one, limited to request paths that decode to an exempted URI. This issue affects Apache APISIX: from 3.18.0 through 3.19.0. Users are recommended to upgrade to version 3.20.0, which fixes the issue.
Title Apache APISIX: unauthorized access to mTLS protected resources
Weaknesses CWE-436
CWE-863
References
Metrics cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-11-13T20:02:19.206Z

Reserved: 2026-11-09T11:03:38.294Z

Link: CVE-2026-124723

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-13T18:17:31.930

Modified: 2026-11-13T20:18:20.753

Link: CVE-2026-124723

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses