CVE-2021-21645Network attack vector

Configuration ID disclosure via unchecked HTTP endpoints

Published Apr 21, 2021 · Updated Aug 3, 2024

Missing authorization in Jenkins Config File Provider Plugin 3.7.0 and earlier allows remote authenticated users to enumerate configuration file IDs. ManagedFile list and validation handlers and Maven settings list-box handlers return stored IDs without Item/Configure checks. Overall/Read access reaches the endpoints; disclosure is limited to configuration file identifiers, not file contents.

CVSS severity4.3
Medium
EPSS probability0.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Missing authorization in Jenkins Config File Provider Plugin 3.7.0 and earlier allows remote authenticated users to enumerate configuration file IDs. ManagedFile list and validation handlers and Maven settings list-box handlers return stored IDs without Item/Configure checks. Overall/Read access reaches the endpoints; disclosure is limited to configuration file identifiers, not file contents.

The record

CVE
CVE-2021-21645
Published
Apr 21, 2021
Updated
Aug 3, 2024
Vendor
Jenkins Project
Product
Config File Provider Plugin
Classifications
CWE-862
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 21, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=unspecified <=3.7.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Jenkins Project · Config File Provider Pluginversion=unspecified <=3.7.0

Published CVSS scores

4.3GitHub Advisory DatabaseCVSS: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.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo