CVE-2026-39998 Details
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.
A vulnerability has been identified in Apache APISIX versions 2.12.0 prior to 3.16.0, allowing attackers to spoof identity headers. This issue arises from improper input validation in the forward-auth plugin, where certain configurations can be exploited. Users are advised to upgrade to version 3.17.0, which addresses this vulnerability.
Users should upgrade to Apache APISIX version 3.17.0 or later.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 22, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2026/06/19/4 | CVE | Third Party Advisory |
| https://lists.apache.org/thread/vgkvy396010d7g6m0jrn4d3hjf2svlvv | [email protected] | Vendor AdvisoryMailing List |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-20 | Improper Input Validation | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| apache apisix | >= 2.12.0, < 3.17.0 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 23, 2026 | Initial Analysis | [email protected] |
| Jun 22, 2026 | CVE Modified | CISA-ADP |
| Jun 19, 2026 | CVE Modified | CVE |
| Jun 19, 2026 | New CVE Received | [email protected] |