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CVE-2026-39998

MEDIUM
5.8
CVSS 4.0
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.

Metadata

CVE ID
CVE-2026-39998
State
PUBLISHED
Assigner
apache
Reserved
2026-04-08 02:34 UTC
Published
2026-06-19 13:04 UTC
Last updated
2026-06-19 16:49 UTC
Primary CWE
CWE-20
CWE-20 Improper Input Validation
Vendor / Product
Apache Software Foundation / Apache APISIX
Sources
cve.org  ·  NVD

Severity & Metrics

5.8 MEDIUM CVSS 4.0
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
Affected products (1)
VendorProductPlatformVersions
Apache Software Foundation Apache APISIX — 2.12.0 ≤ 3.16.0
Weakness (CWE)
CWESourceDescription
CWE-20 cna CWE-20 Improper Input Validation
CVSS scores (1)
ScoreSeverityVersionSourceVector
5.8 MEDIUM 4.0 cna 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
References (1)
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