What is the CVSS score of CVE-2021-21631?

CVE-2021-21631 has a CVSS 3.1 base score of 4.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N. EPSS exploitation probability: 0.8%.

Is there a patch available for CVE-2021-21631?

Yes, a patch is available for CVE-2021-21631. Update the affected software to the latest version immediately.

Cloud Statistics CVE-2021-21631

MEDIUM

Missing Authorization (CWE-862)

2021-03-30 jenkinsci-cert@googlegroups.com

Jenkins Authentication Bypass Cloud Statistics

4.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

4.3 MEDIUM

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Lifecycle Timeline

CVE Published

Mar 30, 2021 - 12:16 nvd

MEDIUM 4.3

Blast Radius

ecosystem impact

† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth

4 maven packages depend on org.jenkins-ci.plugins:cloud-stats (4 direct, 0 indirect)

Ecosystem-wide dependent count for version 0.27.

DescriptionNVD

Jenkins Cloud Statistics Plugin 0.26 and earlier does not perform a permission check in an HTTP endpoint, allowing attackers with Overall/Read permission and knowledge of random activity IDs to view related provisioning exception error messages.

AnalysisAI

Technical ContextAI

This vulnerability is classified as Missing Authorization (CWE-862), which allows attackers to access resources or perform actions without proper authorization checks. Jenkins Cloud Statistics Plugin 0.26 and earlier does not perform a permission check in an HTTP endpoint, allowing attackers with Overall/Read permission and knowledge of random activity IDs to view related provisioning exception error messages. Affected products include: Jenkins Cloud Statistics.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement role-based access control, validate authorization on every request server-side, apply principle of least privilege.