CVE-2026-39999

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Source
https://cve.org/CVERecord?id=CVE-2026-39999
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-39999.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-39999
Aliases
Downstream
Published
2026-06-19T13:07:50Z
Modified
2026-08-12T03:51:40Z
Severity
  • 7.0 (High) CVSS_V4 - 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 CVSS Calculator
Summary
Apache APISIX: JWT Algorithm Confusion allows authentication bypass
Details

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.

Database specific 
{
    "cna_assigner":  "apache",
    "cwe_ids":  [
        "CWE-290"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39999.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "introduced":  "2.2"
                },
                {
                    "last_affected":  "3.16.0"
                }
            ],
            "source":  "AFFECTED_FIELD"
        },
        {
            "extracted_events":  [
                {
                    "introduced":  "v2.2"
                },
                {
                    "fixed":  "v3.16.0"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}
References

Affected packages

Git / github.com/apache/apisix

Affected ranges

Type
GIT
Repo
https://github.com/apache/apisix
Events
Introduced
e8dcf3793ca40b30047406ac51a79a500356f67b
Fixed
9ef2ecab67f652d38365049613610ef649bb4ad0
Database specific
Show details 
{
    "cpe":  "cpe:2.3:a:apache:apisix:*:*:*:*:*:*:*:*",
    "extracted_events":  [
        {
            "introduced":  "2.2"
        },
        {
            "fixed":  "3.17.0"
        }
    ],
    "source":  "CPE_RANGE"
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-39999.json"