CVE-2022-20621

Access-key disclosure via plaintext XML serialization

Published Jan 12, 2022 · Updated Aug 3, 2024

Credential exposure in Jenkins Metrics Plugin 4.0.2.8 and earlier allows local users to read an API access key from controller storage. The MetricsAccessKey descriptor holds each key as a String, causing Jenkins serialization to write the value in clear text to jenkins.metrics.api.MetricsAccessKey.xml. Access requires read permission to the controller file system; disclosure grants the bearer the Metrics servlet permissions assigned to that key.

CVSS severity5.5
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Credential exposure in Jenkins Metrics Plugin 4.0.2.8 and earlier allows local users to read an API access key from controller storage. The MetricsAccessKey descriptor holds each key as a String, causing Jenkins serialization to write the value in clear text to jenkins.metrics.api.MetricsAccessKey.xml. Access requires read permission to the controller file system; disclosure grants the bearer the Metrics servlet permissions assigned to that key.

The record

CVE
CVE-2022-20621
Published
Jan 12, 2022
Updated
Aug 3, 2024
Vendor
Jenkins Project
Product
Jenkins Metrics Plugin
Classifications
CWE-522, T1552.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 12, 2022CVE 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 <=4.0.2.8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Jenkins Project · Jenkins Metrics Pluginversion=unspecified <=4.0.2.8

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
2.1NIST NVDAV:L/AC:L/Au:N/C:P/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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-522Insufficiently Protected Credentials
T1552.001Unsecured Credentials: Credentials In Files

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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