CVE-2022-41243Network attack vector

Connection interception via missing hostname validation

Published Sep 21, 2022 · Updated May 28, 2025

Improper certificate validation in Jenkins SmallTest Plugin 1.0.4 and earlier allows man-in-the-middle attackers to intercept server connections. The connector opens the configured SmallTest server connection without checking that the peer certificate matches the requested hostname. An attacker must control network traffic between the Jenkins controller and SmallTest server; successful interception exposes data carried by that connection.

CVSS severity8.1
High
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper certificate validation in Jenkins SmallTest Plugin 1.0.4 and earlier allows man-in-the-middle attackers to intercept server connections. The connector opens the configured SmallTest server connection without checking that the peer certificate matches the requested hostname. An attacker must control network traffic between the Jenkins controller and SmallTest server; successful interception exposes data carried by that connection.

The record

CVE
CVE-2022-41243
Published
Sep 21, 2022
Updated
May 28, 2025
Vendor
Jenkins Project
Product
SmallTest Plugin
Classifications
CWE-295, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 21, 2022CVE publishedPublication date reported by the CVE source.
  2. May 28, 2025Record 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=unspecified <=1.0.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Jenkins Project · SmallTest Pluginversion=unspecified <=1.0.4

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
8.1CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-295Improper Certificate Validation
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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