CVE-2026-70437

Timing Attack Allows Retrieval of Webhook Bearer Token in Jenkins Plugin

Published Aug 5, 2026 CVSS 3.1 · 3.7 Low EPSS < 1% KEV · Not listed
Description
Jenkins Webhook Secret Credentials Provider Plugin 16.v0cfa_f0215cf5 and earlier does not use a constant-time comparison function when checking whether the provided and expected webhook bearer token are equal, potentially allowing attackers to use statistical methods to obtain a valid webhook bearer token.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Jenkins Project
Jenkins Project jenkins Webhook Secret Credentials Provider Plugin
Vendors & Products Jenkins Project
Jenkins Project jenkins Webhook Secret Credentials Provider Plugin
Type Values Removed Values Added
Title Timing Attack Allows Retrieval of Webhook Bearer Token in Jenkins Plugin
Type Values Removed Values Added
Title Timing Attack Allowing Secret Bearer Token Disclosure in Jenkins Webhook Secret Credentials Provider Plugin
Weaknesses CWE-20
CWE-290
Type Values Removed Values Added
Weaknesses CWE-208
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Timing Attack Allowing Secret Bearer Token Disclosure in Jenkins Webhook Secret Credentials Provider Plugin
Weaknesses CWE-20
CWE-290
Type Values Removed Values Added
Description Jenkins Webhook Secret Credentials Provider Plugin 16.v0cfa_f0215cf5 and earlier does not use a constant-time comparison function when checking whether the provided and expected webhook bearer token are equal, potentially allowing attackers to use statistical methods to obtain a valid webhook bearer token.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
jenkins
Published
Updated
Aug 6, 2026, 2:55 PM
Reserved
Aug 4, 2026, 2:13 PM
Status
Awaiting Analysis
Published
Aug 5, 2026, 6:17 PM
Modified
Oct 24, 2026, 4:10 PM