In Calico, the install-cni init container logs the rendered CNI configuration to standard output. When the configuration template uses the __SERVICEACCOUNT_TOKEN__ placeholder (Canal/Flannel-Calico deployments), the installer substitutes the live Kubernetes ServiceAccount bearer token before logging, exposing the token to any authenticated user with pods/log permission in the namespace with calico-node. The token holds patch privileges on pods/status, enabling annotation-based attacks against cluster workloads. The default kubeconfig-based authentication path is not affected. This is a direct regression of TTA-2018-001.
CVE-2026-41184
Score 6.5 from GitHub Security Advisory published 2026-05-28. NVD baseline CVSS 6.5; sources differ by 0.0.
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.5
- EG Score
- 6.5(medium)
- EPSS
- 39.7%
- KEV
- Not listed
Published
May 28, 2026
Last Modified
June 5, 2026
Advisory Details (4)
Auto-updated Jun 13, 2026Security Bulletins – TTA-2026-001, CVE-2026-41184 | Tigera – Creator of Calico
https://www.tigera.io/security-bulletins/tta-2026-001/[release 3.31] Sanitize log output in CNI plugin (pick #12502)
Fix merged in projectcalico/calico PR #12527 on 2026-04-17 — awaiting tagged release
https://github.com/projectcalico/calico/pull/12527[release 3.32] Sanitize log output in CNI plugin (pick #12502)
Fix merged in projectcalico/calico PR #12526 on 2026-04-17 — awaiting tagged release
https://github.com/projectcalico/calico/pull/12526Sanitize log output in CNI plugin
Fix merged in projectcalico/calico PR #12502 on 2026-04-17 — awaiting tagged release
https://github.com/projectcalico/calico/pull/12502Vendor Advisories for CVE-2026-41184(2)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(2 across 1 ecosystem)
Go(2)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| github.com/projectcalico/calico | — | 3.31.6 | — |
| github.com/projectcalico/calico/v3 | — | — | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 60× 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 119 total refreshes for this CVE.
- 2026-07-16 02:55 UTCEG score recompute
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Related CVEs(same CWE)
Same CWE
10 shownCWE-532
- CVE-2016-0898EG 10.0CRITICAL
- CVE-2018-17922EG 9.8CRITICAL
- CVE-2018-1264NVD 9.1EG 9.8CRITICAL
- CVE-2018-16049EG 9.8CRITICAL
- CVE-2018-11717EG 9.8EPSS 94%CRITICAL
- CVE-2018-11716EG 9.8EPSS 96%CRITICAL
- CVE-2018-0042EG 9.8CRITICAL
- CVE-2018-1072NVD 5.0EG 9.8MEDIUM
- CVE-2018-1117NVD 5.0EG 9.8MEDIUM
- CVE-2018-11320EG 9.8CRITICAL
Frequently asked(5)
What is CVE-2026-41184?
When was CVE-2026-41184 disclosed?
Is CVE-2026-41184 actively exploited?
What is the CVSS score of CVE-2026-41184?
How do I remediate CVE-2026-41184?
Dependency Blast Radius
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