Unauthenticated Go pprof exposure in Calico debug server

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-41186
StatePUBLISHED
AssignerTigera
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-30 15:16:31 UTC
Updated2026-07-30 17:16:31 UTC
DescriptionWhen 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.

Risk And Classification

Primary CVSS: v4.0 6 MEDIUM from [email protected]

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS: 0.002340000 probability, percentile 0.144880000 (date 2026-07-31)

Problem Types: CWE-200 | CWE-489 | CWE-489 CWE-489 Active Debug Code | CWE-200 CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary6MEDIUMCVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:L/SI:L/SA:L/E:X/C...
4.0CNACVSS6MEDIUMCVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:L/SI:L/SA:L

CVSS v4.0 Breakdown

Attack Vector
Adjacent
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
None
Availability
None
Sub Conf.
Low
Sub Integrity
Low
Sub Availability
Low

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Tigera Calico affected 3.31.6 semver Not specified
CNA Tigera Calico affected 3.32.0 3.32.1 semver Not specified
CNA Tigera Calico Enterprise affected 3.21.7 semver Not specified
CNA Tigera Calico Enterprise affected 3.22.0 3.22.4 semver Not specified
CNA Tigera Calico Cloud affected 22.4.0 semver Not specified

References

ReferenceSourceLinkTags
github.com/projectcalico/calico/pull/12491 [email protected] github.com
github.com/projectcalico/calico/pull/12633 [email protected] github.com
github.com/projectcalico/calico/pull/12634 [email protected] github.com
www.tigera.io/security-bulletins/tta-2026-004 [email protected] www.tigera.io
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Behnam Shobiri (en)

CNA: Behnam Shobiri (en)

CNA: Anthony Tam (en)

CNA: Matt Dupre (en)

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