CVE-2026-43644

Description

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.

How to fix CVE-2026-43644

To remediate CVE-2026-43644, upgrade the affected package to a fixed version below.

• —upgrade to 1.8.1-0.20260519111337-cbebb20fd485 or later

Is CVE-2026-43644 being exploited?

Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.

Affected packages (1)

• from 0, < 1.8.1-0.20260519111337-cbebb20fd485

CVSS scores

References (8)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2026-43644
• PATCHgithub.com/stefanprodan/podinfo
• WEBgithub.com/Niccolo10/Security-Advisories/blob/main/CVE-2026-43644/cve-2026-43644.md
• WEBgithub.com/stefanprodan/podinfo/commit/cbebb20fd48588d36fc7ff3e874c128eb89692f4