CVE-2026-43644

podinfo through 6.11.2 contains a reflected cross-site scripting vulnerability in the /echo and /api/echo endpoints where the echoHandler writes request body content directly to the response without setting explicit Content-Type or X-Content-Type-Options headers. Attackers can craft cross-origin HTML pages with auto-submitting forms containing script payloads in the request body, which are served as text/html due to Go's content type detection, allowing the reflected script to execute in the podinfo origin context when victims visit the attacker's page.

• github.comhttps://github.com/Niccolo10/Security-Advisories/blob/main/CVE-2026-43644/cve-2026-43644.md
• github.comhttps://github.com/stefanprodan/podinfo/issues/474
• www.vulncheck.comhttps://www.vulncheck.com/advisories/podinfo-reflected-xss-via-echo-endpoint