CVE-2026-29955Public exploitNetwork attack vector

Authenticated command execution via unsanitized chart name

Published Apr 13, 2026 · Updated Apr 13, 2026

Command injection in KubePlus 4.14 allows remote authenticated users to execute arbitrary commands through the /registercrd endpoint. The download_and_untar_chart function concatenates chartName into shell command strings passed to subprocess.Popen with shell execution enabled and no validation. Access to the HTTP interface and low privileges are required; injected commands run as root in the container and can expose a cluster-admin token.

CVSS severity8.8
High
EPSS probability2.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Command injection in KubePlus 4.14 allows remote authenticated users to execute arbitrary commands through the /registercrd endpoint. The download_and_untar_chart function concatenates chartName into shell command strings passed to subprocess.Popen with shell execution enabled and no validation. Access to the HTTP interface and low privileges are required; injected commands run as root in the container and can expose a cluster-admin token.

The record

CVE
CVE-2026-29955
Published
Apr 13, 2026
Updated
Apr 13, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-94, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 13, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/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.

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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 exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

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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