CVE-2026-41186

Unauthenticated Go pprof exposure in Calico debug server

Published Jul 30, 2026 CVSS 4.0 · 6 Medium EPSS < 1% KEV · Not listed
Description
When Calico's shared debug server is enabled (disabled by default), the Calico kube-controllers and Goldmane components bind their Go pprof debug listener to 0.0.0.0 without authentication. Any pod with network reachability to the listener can retrieve the process heap, goroutine stacks (including function arguments), and command-line arguments. Depending on the process's in-memory state, the heap may contain sensitive material. The debug listener is opt-in but is unsafe when enabled because it offers no authentication and no safe localhost-only binding option.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

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History
Type Values Removed Values Added
First Time appeared Tigera
Tigera calico
Tigera calico Cloud
Tigera calico Enterprise
Vendors & Products Tigera
Tigera calico
Tigera calico Cloud
Tigera calico Enterprise
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description When Calico's shared debug server is enabled (disabled by default), the Calico kube-controllers and Goldmane components bind their Go pprof debug listener to 0.0.0.0 without authentication. Any pod with network reachability to the listener can retrieve the process heap, goroutine stacks (including function arguments), and command-line arguments. Depending on the process's in-memory state, the heap may contain sensitive material. The debug listener is opt-in but is unsafe when enabled because it offers no authentication and no safe localhost-only binding option.
Title Unauthenticated Go pprof exposure in Calico debug server
Weaknesses CWE-200
CWE-489
References
Metrics cvssV4_0

{'score': 6, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:L/SI:L/SA:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Tigera
Published
Updated
Jul 30, 2026, 4:10 PM
Reserved
Apr 17, 2026, 5:41 PM
Status
Analyzed
Published
Jul 30, 2026, 3:16 PM
Modified
Aug 8, 2026, 1:20 AM