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Vulnerability record · CVE-2026-39999 · published 19 June 2026

CVE-2026-39999: Apache apisix authentication bypass by spoofing vulnerability

Apache · Apisix

Authentication Bypass by Spoofing vulnerability in Apache APISIX. The attacker can completely bypass authentication capitalising on certain configurations of jwt-auth plugin. This issue affects Apache APISIX: from v2.2 through v3.16.0. Users are recommended to upgrade to version v3.17.0, which fixes the issue.

7.0 CVSS 4.0 High EPSS 0.64% · top 51.7% CWE-290 · Authentication bypass by spoofing
7.0CVSS 4.0 base score
0.64%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
23 Jun 2026Last modified by NVD

Description

Authentication Bypass by Spoofing vulnerability in Apache APISIX. The attacker can completely bypass authentication capitalising on certain configurations of jwt-auth plugin. This issue affects Apache APISIX: from v2.2 through v3.16.0. Users are recommended to upgrade to version v3.17.0, which fixes the issue.

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://lists.apache.org/thread/nfopt8cnxd3k0rs1oxtr7lzxrdw4mojq Vendor AdvisoryMailing List
http://www.openwall.com/lists/oss-security/2026/06/19/5 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-39999), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.