What is CVE-2026-49872?

CVE-2026-49872 is a high-severity vulnerability in Apache Apisix, classified under Improper Authentication. CVSS score: 8.1/10. Published 2026-06-19.

How severe is CVE-2026-49872?

High severity. CVSS v3 base score is 8.1 out of 10.

Auth bypass in Apache Apisix

CVE-2026-49872

Improper Authentication vulnerability in Apache APISIX. When the cas-auth plugin is used in a route, an attacker can possibly authenticate itself with credentials from a different source. This issue affects Apache APISIX: from 3.0.0 throu…

Vulnerability class: Broken Authentication

EPSS: 0.003 (24.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Affected products

Apache Apisix
Apache Software Foundation Apisix — versions 3.0.0

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

security@apache.org (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)

Frequently asked questions

What is CVE-2026-49872?: CVE-2026-49872 is a high-severity vulnerability in Apache Apisix, classified under Improper Authentication. CVSS score: 8.1/10. Published 2026-06-19.
How severe is CVE-2026-49872?: High severity. CVSS v3 base score is 8.1 out of 10.