CVE-2026-42520Network attack vector

Authenticated arbitrary file write via unsanitized filenames

Published Apr 29, 2026 · Updated Apr 29, 2026

Path traversal in Jenkins Credentials Binding Plugin 719.v80e905ef14eb_ and earlier allows remote authenticated users to write arbitrary files. File and zip file credential handling uses the supplied credential filename without sanitizing path components, so traversal sequences escape the intended workspace location on the node filesystem. Code execution requires permission to configure a file or zip file credential for a job that runs on the built-in node, where the write can target executable Jenkins-controlled locations.

CVSS severity7.5
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Jenkins Credentials Binding Plugin 719.v80e905ef14eb_ and earlier allows remote authenticated users to write arbitrary files. File and zip file credential handling uses the supplied credential filename without sanitizing path components, so traversal sequences escape the intended workspace location on the node filesystem. Code execution requires permission to configure a file or zip file credential for a job that runs on the built-in node, where the write can target executable Jenkins-controlled locations.

The record

CVE
CVE-2026-42520
Published
Apr 29, 2026
Updated
Apr 29, 2026
Vendor
Jenkins Project
Product
Credentials Binding
Classifications
CWE-22, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 29, 2026Record 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 <=719.v80e905ef14eb_

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Jenkins Project · Credentials Bindingversion=0 <=719.v80e905ef14eb_

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1068Exploitation for Privilege Escalation

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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