CVE-2026-49231

Authentication Bypass by Spoofing vulnerability in opa plugin. An attacker could relay spoofed identity headers to upstream capitalising on non-default configuration in opa plugin. This could allow the attacker to assume higher privileges on the upstream service. This issue affects Apache APISIX: from 3.5.0 through 3.16.0. Users are recommended to upgrade to version 3.17.0, which fixes the issue.

Score

CVSS 3.1 5.4 Medium

Status

Analyzed - security@apache.org

Published

2026-06-19

Last modified

2026-10-26

Weaknesses

CWE-290

Affected products

• Apisix (Apache)
• Apache Apisix (Apache Software Foundation)

References

• https://lists.apache.org/thread/s1jd1vxm59p6ghx47xhmpjdk1cobo4hn
• http://www.openwall.com/lists/oss-security/2026/06/19/13