Description
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.
Published: 2026-06-19
Score: 5.8 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 22 Jun 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 19 Jun 2026 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Apache
Apache apache Apisix
Vendors & Products Apache
Apache apache Apisix

Fri, 19 Jun 2026 18:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Apache APISIX: Identity Injection via forward-auth Plugin Missing Header Cleanup
Weaknesses CWE-20
References
Metrics cvssV4_0

{'score': 5.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H'}


Subscriptions

Apache Apache Apisix
cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-06-22T16:16:29.535Z

Reserved: 2026-04-08T02:34:21.516Z

Link: CVE-2026-39998

cve-icon Vulnrichment

Updated: 2026-06-22T16:16:24.996Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-19T21:30:17Z

Weaknesses