CVE-2025-53678

JWT token disclosure via unencrypted global configuration

Published Jul 9, 2025 · Updated Nov 4, 2025

Cleartext token storage in Jenkins User1st uTester Plugin 1.1 and earlier allows local users to read the uTester JWT token. The plugin writes the token without encryption to io.jenkins.plugins.user1st.utester.UTesterPlugin.xml in the controller's global configuration. Exploitation requires controller filesystem access and exposes the configured integration token without altering data or interrupting service.

CVSS severity3.3
Low
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext token storage in Jenkins User1st uTester Plugin 1.1 and earlier allows local users to read the uTester JWT token. The plugin writes the token without encryption to io.jenkins.plugins.user1st.utester.UTesterPlugin.xml in the controller's global configuration. Exploitation requires controller filesystem access and exposes the configured integration token without altering data or interrupting service.

The record

CVE
CVE-2025-53678
Published
Jul 9, 2025
Updated
Nov 4, 2025
Vendor
Jenkins Project
Product
User1st uTester
Classifications
CWE-311, T1552.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 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?

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

  1. Affected versionversion=0 <=1.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Jenkins Project · User1st uTesterversion=0 <=1.1

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
3.3GitHub Advisory DatabaseCVSS:3.1/AV:L/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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-311Missing Encryption of Sensitive Data
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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