CVE-2026-39999NVD

Vulnerability Summary

Authentication Bypass by Spoofing vulnerability in Apache APISIX.

The attacker can completely bypass authentication capitalising on certain configurations of jwt-auth plugin.
This issue affects Apache APISIX: from v2.2 through v3.16.0.

Users are recommended to upgrade to version v3.17.0, which fixes the issue.

Severity Level

UNKNOWN

Published Date

Jun 19, 2026

Last Modified

Jun 22, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

0.39%Probability

Root Weakness (CWE)

CWE-290: Unknown/Unlisted Weakness ↗

Refer to the official MITRE database for detailed architectural specifications regarding this weakness.

CVSS v4.0 Base Metrics — Score 7.0 (HIGH)

Attack VectorNetwork

Attack ComplexityLow

Attack RequirementsPresent

Privileges RequiredNone

User InteractionNone

Confidentiality (Vulnerable System)None

Integrity (Vulnerable System)None

Availability (Vulnerable System)None

Confidentiality (Subsequent System)High

Integrity (Subsequent System)High

Availability (Subsequent System)None

Affected & Patched Versions

Affected Versions

Apache Software Foundation Apache APISIX >= 2.2 and <= 3.16.0

Patched Versions

Apache Software Foundation Apache APISIX 3.16.0

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