CVE-2024-42363Public exploitNetwork attack vector

Authenticated code execution via unsafe YAML deserialization

Published Aug 20, 2024 · Updated Aug 20, 2024

Unsafe deserialization in Zendesk Samson before 3385 allows remote authenticated users to execute code through a crafted Kubernetes role. Kubernetes::RoleVerificationsController passes the role parameter through RoleConfigFile to Kubernetes::Util.parse_file, which invokes YAML.load_stream on attacker-supplied YAML and permits arbitrary Ruby object instantiation. A logged-in user with access to the role-verification endpoint can run commands with the Samson server process's privileges.

CVSS severity8.8
High
EPSS probability1.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unsafe deserialization in Zendesk Samson before 3385 allows remote authenticated users to execute code through a crafted Kubernetes role. Kubernetes::RoleVerificationsController passes the role parameter through RoleConfigFile to Kubernetes::Util.parse_file, which invokes YAML.load_stream on attacker-supplied YAML and permits arbitrary Ruby object instantiation. A logged-in user with access to the role-verification endpoint can run commands with the Samson server process's privileges.

The record

CVE
CVE-2024-42363
Published
Aug 20, 2024
Updated
Aug 20, 2024
Vendor
Zendesk
Product
Samson
Classifications
CWE-502, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 20, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 20, 2024Record 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 <3385
  2. Affected versionversion=< 3385

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Zendesk · Samsonversion=0 <3385; version=< 3385

Published CVSS scores

8.8GitHub, Inc.CVSS: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-502Deserialization of Untrusted Data
T1059Command and Scripting Interpreter

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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