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.
CVE-2026-41186
Score 7.5 from GitHub Security Advisory published 2026-07-30. NVD baseline CVSS 7.5; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5HIGHmedium confidence
- EG Risk
- 34EG Risk 34/100CISA SSVC
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity75% × 45%Exploitation1% × 40%Automatability0% × 15%CISA SSVC: Track at every mission impact level.Action: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release. - EPSS PROB
- 0.7%
- EPSS %ILE
- 50th
- KEV
- Not listed
CISA SSVCTrack at every mission impact level.
An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
July 30, 2026
Last Modified
August 8, 2026
Advisory Details (4)
Auto-updated Jul 30, 2026Security Bulletins – TTA-2026-004, CVE-2026-41186 | Tigera – Creator of Calico
https://www.tigera.io/security-bulletins/tta-2026-004/[release 3.32] kube-controllers, goldmane: use default secure debug server (pick 12491)
Fix merged in projectcalico/calico PR #12633 on 2026-06-15 — awaiting tagged release
https://github.com/projectcalico/calico/pull/12633[release 3.31] kube-controllers, goldmane: use default secure debug server (pick 12491)
Fix merged in projectcalico/calico PR #12634 on 2026-04-27 — awaiting tagged release
https://github.com/projectcalico/calico/pull/12634kube-controllers, goldmane: use default secure debug server
Fix merged in projectcalico/calico PR #12491 on 2026-04-27 — awaiting tagged release
https://github.com/projectcalico/calico/pull/12491Vendor Advisories for CVE-2026-41186(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 15× in last 7d / 75× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 214 total refreshes for this CVE.
- 2026-10-09 20:07 UTCEPSS rescore
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- 2026-09-27 19:01 UTCEG score recompute
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- 2026-09-27 13:48 UTCEPSS rescore
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- 2026-09-22 15:14 UTCEG score recompute
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- 2026-09-18 01:23 UTCEG score recompute
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- 2026-09-13 02:34 UTCEG score recompute
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- 2026-09-12 15:01 UTCEPSS rescore
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- 2026-09-11 15:22 UTCEG score recompute
- 2026-09-11 15:22 UTCGHSA enrichment
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- 2026-09-10 09:34 UTCEPSS rescore
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- 2026-09-09 07:15 UTCEG score recompute
- 2026-09-09 07:15 UTCGHSA enrichment
- 2026-09-08 22:00 UTCEPSS rescore
- 2026-09-07 19:58 UTCEG score recompute
- 2026-09-07 19:58 UTCGHSA enrichment
- 2026-09-07 16:01 UTCEPSS rescore
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- 2026-09-06 18:24 UTCGHSA enrichment
- 2026-09-06 13:47 UTCEPSS rescore
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- 2026-09-05 18:50 UTCEG score recompute
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- 2026-09-01 13:53 UTCEPSS rescore
- 2026-09-01 04:39 UTCEPSS rescore
- 2026-08-31 23:33 UTCGHSA enrichment
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Frequently asked(5)
What is CVE-2026-41186?
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Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-41186
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