CVE-2026-39998

HighCVSS 8.8

Published: 19/06/2026(UTC)Updated: 23/06/2026(UTC)Translated: 24/06/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.28%

20th percentile - higher than 20% of all known CVEs

Summary

Improper Input Validation vulnerability in Apache APISIX allows an attacker to spoof identity headers by exploiting certain configuration in the forward-auth plugin. This issue affects versions from 2.12.0 through 3.16.0.

Risk Assessment

The organization may be exposed to identity spoofing attacks, potentially leading to unauthorized access to resources.

Recommendation

Users are recommended to upgrade to version 3.17.0, which fixes the issue.

Original NVD description (English source)

Improper Input Validation vulnerability in Apache APISIX. The attacker can take advantage of certain configuration in forward-auth plugin to spoof identity headers. This issue affects Apache APISIX: from 2.12.0 through 3.16.0. Users are recommended to upgrade to version 3.17.0, which fixes the issue.