CVE-2021-32690Network attack vector

Credential disclosure via unscoped chart download authentication

Published Jun 16, 2021 · Updated Aug 3, 2024

Information disclosure in Helm before 3.6.1 allows remote attackers to obtain repository credentials through cross-domain chart URLs. ChartDownloader attached the repository's Basic Auth options to archive URLs from index.yaml without restricting their scheme, host, or port. Exploitation requires configured repository credentials, attacker-influenced repository metadata, and a pull or installation of the referenced chart.

CVSS severity6.8
Medium
EPSS probability1.40%
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 before 3.6.1 allows remote attackers to obtain repository credentials through cross-domain chart URLs. ChartDownloader attached the repository's Basic Auth options to archive URLs from index.yaml without restricting their scheme, host, or port. Exploitation requires configured repository credentials, attacker-influenced repository metadata, and a pull or installation of the referenced chart.

The record

CVE
CVE-2021-32690
Published
Jun 16, 2021
Updated
Aug 3, 2024
Vendor
The Helm Project
Product
Helm
Classifications
CWE-200
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 16, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=< 3.6.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Helm Project · Helmversion=< 3.6.1

Published CVSS scores

8.6NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
6.8GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:P/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

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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