# CVE-2026-124680: Apache APISIX: Route-level authentication bypass via path normalization mismatch between routing and upstream forwarding

Status: published. Published: 2026-11-13. Updated: 2026-11-13.

Interpretation Conflict, resulting in (Incorrect Authorization) vulnerability in Apache APISIX.



An unauthenticated client can reach upstream paths protected
by a route-level auth plugin when a route without auth exists on the
same upstream and the upstream does not collapse encoded dot segments.



This issue affects Apache APISIX: from 0.9 through 3.19.0.



Users are recommended to upgrade to version 3.20.0, which fixes the issue.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Apache Software Foundation / Apache APISIX (apache.org/apisix): ≥ 0.9; ≤ 3.19.0 (affected, semver). Source: CNA: apache

## Severity and prioritization

- CVSS 4.0: 7 (high); CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N; source: CNA: apache

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-436

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://lists.apache.org/thread/tsr691p4s58572og5f88p831vygbflvz (CNA: apache; vendor-advisory)

## Provenance

- CNA: apache: https://www.cve.org/CVERecord?id=CVE-2026-124680; retrieved 2026-11-13; source updated 2026-11-13

Revision: 169592ec6bbc4e9bbaad9afaea0483a2de310b7b69c67e42bb3a1fe85b127007

Canonical: https://y2.dev/cve/CVE-2026-124680

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