CVE-2023-43494Network attack vector

Build secret disclosure via history search oracle

Published Sep 20, 2023 · Updated Sep 24, 2024

Information disclosure in Jenkins 2.50 through 2.423 and LTS 2.60.1 through 2.414.1 allows remote authenticated users to read build secrets. The build history widget searches parameter values without excluding sensitive build variables, turning match results into a character-by-character oracle. Item/Read permission and access to builds containing secrets are required; exposure is limited to sensitive variable values discoverable through repeated searches.

CVSS severity4.3
Medium
EPSS probability3.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Information disclosure in Jenkins 2.50 through 2.423 and LTS 2.60.1 through 2.414.1 allows remote authenticated users to read build secrets. The build history widget searches parameter values without excluding sensitive build variables, turning match results into a character-by-character oracle. Item/Read permission and access to builds containing secrets are required; exposure is limited to sensitive variable values discoverable through repeated searches.

The record

CVE
CVE-2023-43494
Published
Sep 20, 2023
Updated
Sep 24, 2024
Vendor
Jenkins Project
Product
Jenkins
Classifications
T1552
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 20, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

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

4.3NIST NVDCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

T1552Unsecured Credentials

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo