CVE-2026-39998
Apache APISIX: Identity Injection via forward-auth Plugin Missing Header Cleanup
- State
- Published
- Severity
- 5.8 Medium
- Published
- Jun 19, 2026
- Updated
- Jun 22, 2026
- Reserved
- Apr 8, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.8 Medium | 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 | apache |
Weaknesses
- CWE-20 Improper Input Validation
Affected Products
| Product | Versions |
|---|---|
Apache APISIXApache Software Foundation |
|
References
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