CVE-2026-39998
Apache APISIX: Identity Injection via forward-auth Plugin Missing Header Cleanup
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.
INFO
Published Date :
June 19, 2026, 1:04 p.m.
Last Modified :
June 19, 2026, 1:05 p.m.
Remotely Exploit :
Yes !
Source :
apache
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | MEDIUM | f0158376-9dc2-43b6-827c-5f631a4d8d09 |
Solution
- Upgrade Apache APISIX to version 3.17.0.
- Review forward-auth plugin configurations.
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