CVE-2026-124723

EUVD-2026-125676

13.11.2026, 18:17

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
apache	CNA	6.3 MEDIUM	NETWORK	LOW	NONE	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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Base Score

CVSS 3.x

EPSS Score

Percentile: Unknown

Early Detection

Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).

Vendor	Product	Version	Source
apache	apisix	3.18.0 ≤ 𝑥 ≤ 3.19.0	CNA

Common Weakness Enumeration

CWE-436 - Interpretation Conflict
Product A handles inputs or steps differently than Product B, which causes A to perform incorrect actions based on its perception of B's state.

References

https://lists.apache.org/thread/0r8dv4ytw5mkhrozlg7mgb9h6z5y7hpn

http://www.openwall.com/lists/oss-security/2026/11/13/10