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

What is CVE-2026-49231?

CVE-2026-49231 is a low-severity authentication bypass vulnerability in Apache APISIX, published on 19 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official 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.

Weakness: CWE-290

Which versions are affected by CVE-2026-49231?

1 open source package ship an affected version, including apisix. It affects 1 product.

Products include Apache Apisix.

How do I fix CVE-2026-49231?

Upgrade apisix to 3.18.0 or later.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2026-49231 being exploited?

There is no known exploitation of CVE-2026-49231 in the wild and no public exploit code.

Other vulnerabilities in Apache APISIX

• CVE-2022-24112 Apache APISIX Authentication Bypass Exploited Critical 9.8
• CVE-2022-25757 Apache APISIX: the body_schema check in request-validation plugin can be bypassed Critical 9.8
• CVE-2026-31908 Apache APISIX: forward auth plugin allows header injection Critical 9.1
• CVE-2026-75005 Apache APISIX: Unauthenticated CPU-exhaustion DoS High 8.7
• CVE-2025-27446 Privilege escalation in Apache APISIX Java Plugin Runner High 7.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-apisix-2026-49231, GHSA-3cm7-pvjf-2x7q, MINI-jf8q-4xcf-xrvf.