CVE-2023-43500Network attack vector

Server-side request forgery via non-POST connection test

Published Sep 20, 2023 · Updated Sep 24, 2024

CSRF in Jenkins Build Failure Analyzer Plugin 2.4.1 and earlier allows remote attackers to induce connections to chosen hosts and ports. The connection-test HTTP endpoint accepts non-POST requests and initiates outbound connections with attacker-supplied host, port, username, and password values. Exploitation requires a victim's browser to submit the crafted request; the resulting server-side connection can reach hosts visible to the controller.

CVSS severity8.8
High
EPSS probability0.41%
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

CSRF in Jenkins Build Failure Analyzer Plugin 2.4.1 and earlier allows remote attackers to induce connections to chosen hosts and ports. The connection-test HTTP endpoint accepts non-POST requests and initiates outbound connections with attacker-supplied host, port, username, and password values. Exploitation requires a victim's browser to submit the crafted request; the resulting server-side connection can reach hosts visible to the controller.

The record

CVE
CVE-2023-43500
Published
Sep 20, 2023
Updated
Sep 24, 2024
Vendor
Jenkins Project
Product
Build Failure Analyzer Plugin
Classifications
CWE-352, T1190
Attack vector
network
Privileges
unauthenticated

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?

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

  1. Affected versionversion=0 <=2.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Jenkins Project · Build Failure Analyzer Pluginversion=0 <=2.4.1

Published CVSS scores

4.3GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1190Exploit Public-Facing Application

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