Servers and applications

CVE-2026-124719

Apache APISIX: identity spoofing in openapi-to-mcp

Severity: Low 2.3
Published: 13 Nov 2026
Last changed: 13 Nov 2026
Added to UpHeron: 13 Nov 2026
Fixed in: 3.20.0
Weakness: Authentication bypass by spoofing (CWE-290)
Attack: Over the network · Only under certain conditions · Needs a user account · No user action needed
CVSS vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Sources: CVE Program

Description

Authentication bypass by spoofing vulnerability in Apache APISIX.
When a Route's configured headers carry a caller identity and the OpenAPI document declares the same header, a caller can act as another identity against the upstream API. This issue affects Apache APISIX: from 3.19.0 before 3.20.0.
Users are recommended to upgrade to version 3.20.0, which fixes the issue.

From the CVE Program.

Affected software

Software	Affected versions
Apache APISIXServers and applications · `cna:apache software foundation\|apache apisix`	From 3.19.0 before 3.20.0

References

CVE.org https://www.cve.org/CVERecord?id=CVE-2026-124719