CVE-2026-41186
Last modified
CVE-2026-41186 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.23% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Tigera | Calico | < 3.21.7 |
| Tigera | Calico | < 3.31.6 |
| Tigera | Calico | <= 22.4.0 |
| Tigera | Calico | >= 3.22.0, < 3.22.4 |
| Tigera | Calico | >= 3.32.0, < 3.32.1 |
References
- https://github.com/projectcalico/calico/pull/12491Issue Tracking, Patch
- https://github.com/projectcalico/calico/pull/12633Issue Tracking, Patch
- https://github.com/projectcalico/calico/pull/12634Issue Tracking, Patch
- https://www.tigera.io/security-bulletins/tta-2026-004/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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