CVE-2021-21661

MEDIUMNVD 4.34.3—

4.3

Jenkins Kubernetes CLI Plugin 1.10.0 and earlier does not perform permission checks in several HTTP endpoints, allowing attackers with Overall/Read permission to enumerate credentials IDs of credentials stored in Jenkins.

CVSS v3: 4.3
EG Score: 4.3(medium)
EPSS: 63.0%
KEV: Not listed

Published

June 10, 2021

Last Modified

November 21, 2024

References (4)

jenkinsci-cert@googlegroupshttp://www.openwall.com/lists/oss-security/2021/06/10/14
jenkinsci-cert@googlegroupshttps://www.jenkins.io/security/advisory/2021-06-10/#SECURITY-2370
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2021/06/10/14
af854a3a-2127-422b-91ae-364da2661108https://www.jenkins.io/security/advisory/2021-06-10/#SECURITY-2370

Affected Packages

(1 across 1 ecosystem)

Maven(1)

Package	Vulnerable range	Fixed in	Dependents
org.jenkins-ci.plugins:kubernetes-cli	0.1.0 ... 1.9.0 (15 versions)	1.10.1	—

Data Freshness Timeline

(refreshed 13× in last 7d / 20× 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.

2026-06-08 14:15 UTCEPSS rescore
2026-06-08 14:15 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore

Frequently asked(5)

What is CVE-2021-21661?

CVE-2021-21661 is a medium vulnerability published on June 10, 2021. Jenkins Kubernetes CLI Plugin 1.10.0 and earlier does not perform permission checks in several HTTP endpoints, allowing attackers with Overall/Read permission to enumerate credentials IDs of credentials stored in Jenkins.

When was CVE-2021-21661 disclosed?

CVE-2021-21661 was first published in the National Vulnerability Database on June 10, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-21661 actively exploited?

CVE-2021-21661 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 63.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-21661?

CVE-2021-21661 has a CVSS v3 base score of 4.3 (NVD).

How do I remediate CVE-2021-21661?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-21661, 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.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-21661

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CVE-2021-21661

📅 Published

🔄 Last Modified

🔗 References (4)