BIT-apisix-2026-39999

vendorUSosv

Apache APISIX: JWT Algorithm Confusion allows authentication bypass

view advisory published 2026-06-23Licence: per source

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.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2026-39999US	critical9.1	0.64% (50th)	—	2026-06-19
Authentication Bypass by Spoofing vulnerability in Apache APISIX. The attacker can completely bypass authentication capitalising on certain configurations of jwt-auth plugin. This…

references

External citations — patches, advisories, analysis.

http://www.openwall.com/lists/oss-security/2026/06/19/5ADVISORY
https://lists.apache.org/thread/nfopt8cnxd3k0rs1oxtr7lzxrdw4mojqADVISORY
https://nvd.nist.gov/vuln/detail/CVE-2026-39999WEB

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