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.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00141.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

No data.

No data.

No data.

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Vendors Products
References
Link Providers
https://www.jenkins.io/security/advisory/2026-08-05/#SECURITY-3918 cve-icon
History

Thu, 06 Aug 2026 20:15:00 +0000

Type Values Removed Values Added
Title Timing Attack Allows Retrieval of Webhook Bearer Token in Jenkins Plugin

Thu, 06 Aug 2026 18:00:00 +0000

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

Thu, 06 Aug 2026 15:30:00 +0000

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'}

Wed, 05 Aug 2026 20:00:00 +0000

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

Wed, 05 Aug 2026 18:00:00 +0000

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
cve-icon MITRE

Status: PUBLISHED

Assigner: jenkins

Published:

Updated: 2026-08-06T14:55:24.749Z

Reserved: 2026-08-04T14:13:20.602Z

Link: CVE-2026-70437

cve-icon Vulnrichment

Updated: 2026-08-06T14:55:06.523Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-06T20:00:04Z