CVE-2026-6720

HIGHNVD 7.27.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.2 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 87% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
7.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.2Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

When calicoctl is invoked with --log-level=info or --log-level=debug, the client prints the full contents of its loaded connection-configuration struct to stderr in a single log line. The struct embeds every credential calicoctl uses to talk to the cluster — inline kubeconfig (with bearer token), Kubernetes API bearer token, etcd password, and inline PEM-encoded etcd client certificate and key. Any reader of that stderr stream — CI job logs, session-recording archives, shared support-ticket transcripts, or local filesystem viewers on the host that ran calicoctl — can extract these credentials with zero Kubernetes privilege. calicoctl's default log level is panic, so this issue only triggers when verbose logging is explicitly enabled.

CVSS v3
7.2
EG Score
7.2(medium)
EPSS
13.0%
KEV
Not listed

Published

May 28, 2026

Last Modified

May 29, 2026

Advisory Details (4)

Auto-updated Jun 11, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr.
generic

Security Bulletins – TTA-2026-003, CVE-2026-6720 | Tigera – Creator of Calico

https://www.tigera.io/security-bulletins/tta-2026-003/
github_pr

[release 3.31] Remove sensitive info from logs (pick 12535)

Fix merged in projectcalico/calico PR #12537 on 2026-04-20 — awaiting tagged release

https://github.com/projectcalico/calico/pull/12537
github_pr

[release 3.32] Remove sensitive info from logs (pick 12535)

Fix merged in projectcalico/calico PR #12536 on 2026-04-20 — awaiting tagged release

https://github.com/projectcalico/calico/pull/12536
github_pr

Sanitize calicoctl log output

Fix merged in projectcalico/calico PR #12535 on 2026-04-20 — awaiting tagged release

https://github.com/projectcalico/calico/pull/12535

Vendor Advisories for CVE-2026-6720(1)

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)
PackageVulnerable rangeFixed inDependents
github.com/projectcalico/calicoctl———
github.com/projectcalico/calicoctl/v3—3.31.6—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 79× 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 166 total refreshes for this CVE.

  1. 2026-07-16 02:55 UTCEG score recompute
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 02:00 UTCEPSS rescore
  4. 2026-07-13 22:31 UTCEPSS rescore
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  8. 2026-07-11 19:52 UTCEG score recompute
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  1. 2026-07-02 12:59 UTCEG score recompute
  2. 2026-07-02 12:59 UTCGHSA enrichment
  3. 2026-07-01 15:30 UTCEG score recompute
  4. 2026-07-01 15:30 UTCGHSA enrichment
  5. 2026-07-01 15:07 UTCEPSS rescore
  6. 2026-07-01 02:55 UTCEG score recompute
  7. 2026-07-01 02:55 UTCGHSA enrichment
  8. 2026-06-30 23:22 UTCEPSS rescore
  9. 2026-06-30 02:07 UTCEG score recompute
  10. 2026-06-30 02:07 UTCGHSA enrichment
  11. 2026-06-29 14:06 UTCEPSS rescore
  12. 2026-06-29 13:42 UTCEG score recompute
  13. 2026-06-29 13:42 UTCGHSA enrichment
  14. 2026-06-28 19:01 UTCEG score recompute
  15. 2026-06-28 19:01 UTCGHSA enrichment
  16. 2026-06-28 14:07 UTCEPSS rescore
  17. 2026-06-28 06:37 UTCEG score recompute
  18. 2026-06-28 06:37 UTCGHSA enrichment
  19. 2026-06-28 04:56 UTCEPSS rescore
  20. 2026-06-27 18:07 UTCEG score recompute
  21. 2026-06-27 18:07 UTCGHSA enrichment
  22. 2026-06-27 05:26 UTCEG score recompute
  23. 2026-06-27 05:26 UTCGHSA enrichment
  24. 2026-06-27 03:08 UTCEPSS rescore
  25. 2026-06-26 16:47 UTCEG score recompute
  26. 2026-06-26 16:46 UTCGHSA enrichment
  27. 2026-06-25 20:29 UTCEG score recompute
  28. 2026-06-25 20:29 UTCGHSA enrichment
  29. 2026-06-25 13:50 UTCEPSS rescore
  30. 2026-06-25 08:04 UTCEG score recompute
  31. 2026-06-25 08:04 UTCGHSA enrichment
  32. 2026-06-24 16:38 UTCEG score recompute
  33. 2026-06-24 16:37 UTCGHSA enrichment
  34. 2026-06-24 14:05 UTCEPSS rescore
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  45. 2026-06-19 00:27 UTCEG score recompute
  46. 2026-06-19 00:26 UTCGHSA enrichment
  47. 2026-06-18 17:52 UTCEPSS rescore
  48. 2026-06-18 17:52 UTCEPSS rescore
  49. 2026-06-17 18:04 UTCEG score recompute
  50. 2026-06-17 18:04 UTCGHSA enrichment
  51. 2026-06-17 17:53 UTCEPSS rescore
  52. 2026-06-17 04:02 UTCEG score recompute
  53. 2026-06-17 04:02 UTCGHSA enrichment
  54. 2026-06-16 17:53 UTCEPSS rescore
  55. 2026-06-16 15:38 UTCEG score recompute
  56. 2026-06-16 15:38 UTCGHSA enrichment
  57. 2026-06-16 01:20 UTCEG score recompute
  58. 2026-06-16 01:20 UTCGHSA enrichment
  59. 2026-06-15 17:49 UTCEPSS rescore
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  61. 2026-06-15 12:54 UTCEG score recompute
  62. 2026-06-15 12:54 UTCGHSA enrichment
  63. 2026-06-15 00:00 UTCEG score recompute
  64. 2026-06-14 23:59 UTCGHSA enrichment
  65. 2026-06-14 23:18 UTCEPSS rescore
  66. 2026-06-14 11:36 UTCEG score recompute
  67. 2026-06-14 11:35 UTCGHSA enrichment
  68. 2026-06-13 23:12 UTCEG score recompute
  69. 2026-06-13 23:12 UTCGHSA enrichment
  70. 2026-06-13 23:00 UTCEPSS rescore
  71. 2026-06-13 10:48 UTCEG score recompute
  72. 2026-06-13 10:48 UTCGHSA enrichment
  73. 2026-06-12 23:12 UTCEPSS rescore
  74. 2026-06-12 23:12 UTCEPSS rescore
  75. 2026-06-12 22:23 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-6720?
CVE-2026-6720 is a high vulnerability published on May 28, 2026. When calicoctl is invoked with --log-level=info or --log-level=debug, the client prints the full contents of its loaded connection-configuration struct to stderr in a single log line. The struct embeds every credential calicoctl uses to talk to the cluster — inline kubeconfig (with bearer token),…
When was CVE-2026-6720 disclosed?
CVE-2026-6720 was first published in the National Vulnerability Database on May 28, 2026, with the most recent update on May 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6720 actively exploited?
CVE-2026-6720 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 13.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-6720?
CVE-2026-6720 has a CVSS v3 base score of 7.2 (NVD).
How do I remediate CVE-2026-6720?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6720, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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