https://seclists.org/oss-sec/2026/q2/972: CVE-2026-39998: Apache APISIX: Identity Injection via forward-auth Plugin Missing Header Cleanup
Published Jun 19, 2026
·Updated
Affected Software
1 affected component
Apache APISIX>=2.12.0<=3.16.0
Frequently Asked Questions
1
What is the severity of CVE-2026-39998?
CVE-2026-39998 has a severity rating that must be assessed based on the extent of the improper input validation vulnerability present in affected versions.
2
How do I fix CVE-2026-39998?
To fix CVE-2026-39998, upgrade Apache APISIX to version 3.16.1 or later, where the vulnerability is resolved.
3
Which versions of Apache APISIX are affected by CVE-2026-39998?
CVE-2026-39998 affects Apache APISIX versions from 2.12.0 through 3.16.0.
4
What type of vulnerability is CVE-2026-39998?
CVE-2026-39998 is classified as an improper input validation vulnerability.
5
What attack vector is associated with CVE-2026-39998?
The attack vector associated with CVE-2026-39998 involves spoofing identity headers via the forward-auth plugin.