CVE-2026-41186
Unauthenticated Go pprof exposure in Calico debug server
- Published
- Updated
- Reserved
- Assigned by
- Tigera
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| TigeraCNA (assigner) | 4.0 | Medium6.0 | 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 |
| NVDNVD · Analyzed | 4.0 | Medium6.0 | 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 (exploitation in 30 days)
- 0.67% · top 48% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.0.
Weakness
Affected products
- affected < 3.31.6
- affected 3.32.0 – < 3.32.1
- affected < 3.21.7
- affected 3.22.0 – < 3.22.4
- affected < 22.4.0
References (4)
- https://github.com/projectcalico/calico/pull/12491 (opens in a new tab)patch
- https://github.com/projectcalico/calico/pull/12634 (opens in a new tab)patch
- https://github.com/projectcalico/calico/pull/12633 (opens in a new tab)patch
- https://www.tigera.io/security-bulletins/tta-2026-004/ (opens in a new tab)vendor-advisory
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-41186)Record last updated .