PT-2026-50879 · Apache · Apache Apisix

Fernando Mecozzi

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Published

2026-06-19

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Updated

2026-06-19

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CVE-2026-39998

CVSS v4.0

5.8

Medium

VectorAV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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.

Fix

RCE

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Weakness Enumeration

Related Identifiers

CVE-2026-39998

Affected Products

Apache Apisix