CVE-2026-124723

Published Nov 13, 2026 Modified Nov 13, 2026 CWE-436 CWE-863

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.

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Weakness Type (CWE)

CWE-436 CWE-436
CWE-863 Incorrect Authorization

References

Frequently Asked Questions

What is CVE-2026-124723? +
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.
How do I check if I'm vulnerable to CVE-2026-124723? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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