Authentication Bypass by Spoofing in Apache APISIX - CVE-2026-49231
Published: August 25, 2026
Vulnerability identifier: #VU145255
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-49231
CWE-ID: CWE-290
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to assume higher privileges on the upstream service.
The vulnerability exists due to improper access control in opa plugin when relaying spoofed identity headers to upstream services. A remote attacker can send spoofed identity headers to assume higher privileges on the upstream service.
Exploitation requires non-default configuration in the plugin.
Affected software
Apache APISIX
How to mitigate CVE-2026-49231
Install security update from vendor's website.
Apache APISIX - update to 3.17.0