CVE-2025-67637Network attack vector

Token disclosure via cleartext job configuration storage

Published Dec 10, 2025 · Updated Dec 10, 2025

Cleartext credential storage in Jenkins 2.540 and earlier and LTS 2.528.2 and earlier allows authenticated users to read build tokens. BuildAuthorizationToken stored the token as a String, and its XStream converter returned that raw value when serializing job configuration. Exposure requires Item/Extended Read permission or controller filesystem access and is limited to jobs that use build authorization tokens.

CVSS severity4.3
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext credential storage in Jenkins 2.540 and earlier and LTS 2.528.2 and earlier allows authenticated users to read build tokens. BuildAuthorizationToken stored the token as a String, and its XStream converter returned that raw value when serializing job configuration. Exposure requires Item/Extended Read permission or controller filesystem access and is limited to jobs that use build authorization tokens.

The record

CVE
CVE-2025-67637
Published
Dec 10, 2025
Updated
Dec 10, 2025
Vendor
Jenkins Project
Product
Jenkins
Classifications
CWE-312, T1552.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Jenkins Project · JenkinsAffected versions are unavailable in this record.

Published CVSS scores

4.3CISA-ADPCVSS: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.

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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-312Cleartext Storage of Sensitive Information
T1552.001Unsecured Credentials: Credentials In Files

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

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Your stack

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