CVE-2022-23526Network attack vector

Denial of service via unrecovered schema panic

Published Dec 15, 2022 · Updated Apr 18, 2025

NULL pointer dereference in Helm before 3.10.3 allows attackers to crash a Helm client or SDK application via a crafted JSON schema. ValidateAgainstSingleSchema lets a panic from malformed schema parsing escape instead of recovering it as an error. The target must process an attacker-supplied schema; a CLI invocation terminates, while a long-running application embedding the SDK suffers a service interruption.

CVSS severity7.5
High
EPSS probability0.82%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Helm before 3.10.3 allows attackers to crash a Helm client or SDK application via a crafted JSON schema. ValidateAgainstSingleSchema lets a panic from malformed schema parsing escape instead of recovering it as an error. The target must process an attacker-supplied schema; a CLI invocation terminates, while a long-running application embedding the SDK suffers a service interruption.

The record

CVE
CVE-2022-23526
Published
Dec 15, 2022
Updated
Apr 18, 2025
Vendor
The Helm Project
Product
Helm
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 15, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 18, 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=< v3.10.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Helm Project · Helmversion=< v3.10.3

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.3GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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-476NULL Pointer Dereference
T1499.004Application or System Exploitation

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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