GHSA-3m4q-ggcj-j6m4Published

Calicoctl leaks cluster credentials to stderr when verbose logging is enabled

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cve-program · CVE-2026-6720

Published

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.

Source published: 28 May 2026 15:47:42 UTC
Source modified: 28 May 2026 17:04:11 UTC
Saved here: 23 Oct 2026 15:48:27 UTC
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CVSS 4.0 · 7.2 CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H

euvd · EUVD-2026-32932

Published

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datePublished: May 28, 2026, 3:47:42 PM

dateUpdated: May 28, 2026, 5:04:11 PM

Source published: May 28, 2026, 3:47:42 PM (timezone not stated)
Source modified: May 28, 2026, 5:04:11 PM (timezone not stated)
Saved here: 15 Nov 2026 16:52:36 UTC
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EUVD CVSS 4.0 · 7.2 CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H

nvd · CVE-2026-6720

Published

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Source analysis status: Deferred

Weakness classifications: CWE-532

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published: 2026-05-28T17:16:33.490

lastModified: 2026-06-17T11:01:12.887

Source published: 28 May 2026 17:16:33 UTC
Source modified: 17 Jun 2026 11:01:12 UTC
Saved here: 25 Oct 2026 15:18:51 UTC
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CVSS 4.0 · [email protected] · Secondary · 7.2 CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/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

osv · GHSA-3m4q-ggcj-j6m4

Published

Source published: 28 May 2026 18:30:32 UTC
Source modified: 10 Sep 2026 03:50:45 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

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CVSS_V4 · CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H

Publisher rating · HIGH

osv · GO-2026-5893

Published

Calico Inserts Sensitive Information into Log File in github.com/projectcalico/calicoctl. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. (If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.) The additional affected modules and versions are: github.com/projectcalico/calicoctl/v3 before v3.31.6.

Source published: 7 Jul 2026 15:26:37 UTC
Source modified: 7 Jul 2026 16:01:31 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: OSV · upstream source license applies

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