CVE-2021-21631Network attack vector

Provisioning error disclosure via unchecked activity endpoint

Published Mar 30, 2021 · Updated Aug 3, 2024

Missing authorization in the Cloud Statistics Plugin 0.26 and earlier from Jenkins Project allows remote authenticated users to read provisioning errors. The CloudStatistics Stapler target exposed nested activity attachments without enforcing getRequiredPermission before routing each request. Overall/Read permission and knowledge of a random activity ID are required; the reported impact is limited to disclosure of related provisioning exception messages.

CVSS severity4.3
Medium
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in the Cloud Statistics Plugin 0.26 and earlier from Jenkins Project allows remote authenticated users to read provisioning errors. The CloudStatistics Stapler target exposed nested activity attachments without enforcing getRequiredPermission before routing each request. Overall/Read permission and knowledge of a random activity ID are required; the reported impact is limited to disclosure of related provisioning exception messages.

The record

CVE
CVE-2021-21631
Published
Mar 30, 2021
Updated
Aug 3, 2024
Vendor
Jenkins Project
Product
Cloud Statistics Plugin
Classifications
CWE-862
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 30, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <=0.26

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Jenkins Project · Cloud Statistics Pluginversion=unspecified <=0.26

Published CVSS scores

4.0NIST NVDAV:N/AC:L/Au:S/C:P/I:N/A:N
4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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