CVE-2026-49231: Apache APISIX: Identity spoofing issue in APISIX opa plugin

[Abhishek Choudhary <shreemaanabhishek () apache org>]

Severity: 

Affected versions:

- Apache APISIX 3.5.0 through 3.16.0

Description:

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.

Credit:

lokerxxx (reporter)

References:

https://apisix.apache.org
https://www.cve.org/CVERecord?id=CVE-2026-49231