CVE-2026-43644

podinfo 6.11.2 Reflected XSS via /echo Endpoint

Published May 14, 2026 CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-q23m-vm9r-5745 podinfo: cross-site scripting vulnerability in the /echo and /api/echo endpoints
History
Type Values Removed Values Added
CPEs cpe:2.3:a:stefanprodan:podinfo:*:*:*:*:*:kubernetes:*:*
Type Values Removed Values Added
First Time appeared Stefanprodan
Stefanprodan podinfo
Vendors & Products Stefanprodan
Stefanprodan podinfo
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title podinfo 6.11.2 Reflected XSS via /echo Endpoint
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Oct 8, 2026, 3:22 PM
Reserved
May 1, 2026, 6:22 PM
Status
Analyzed
Published
May 14, 2026, 1:16 PM
Modified
Oct 26, 2026, 2:10 PM