CVE-2023-25165Network attack vector

Chart-value disclosure via template-triggered DNS lookups

Published Feb 8, 2023 · Updated Mar 10, 2025

Information disclosure in Helm 3.0.0 through 3.11.0 allows attackers to leak chart values to a DNS server through chart rendering. The template engine leaves getHostByName enabled and resolves an attacker-controlled hostname during install, upgrade, template, or SDK rendering. Exploitation requires an operator or application to render the malicious chart, and the encoded data reaches the DNS resolver handling the query.

CVSS severity4.3
Medium
EPSS probability0.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Helm 3.0.0 through 3.11.0 allows attackers to leak chart values to a DNS server through chart rendering. The template engine leaves getHostByName enabled and resolves an attacker-controlled hostname during install, upgrade, template, or SDK rendering. Exploitation requires an operator or application to render the malicious chart, and the encoded data reaches the DNS resolver handling the query.

The record

CVE
CVE-2023-25165
Published
Feb 8, 2023
Updated
Mar 10, 2025
Vendor
The Helm Project
Product
Helm
Classifications
CWE-200, T1048.003
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Feb 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 10, 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=>= 3.0.0, < 3.11.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

The Helm Project · Helmversion=>= 3.0.0, < 3.11.1

Published CVSS scores

4.3NISTCVSS: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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1048.003Exfiltration Over Unencrypted Non-C2 Protocol

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

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Your stack

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