CVE-2023-0518Public exploitNetwork attack vector

Sidekiq crash via unbounded Helm metadata read

Published Feb 13, 2023 · Updated Mar 21, 2025

Resource exhaustion in GitLab allows remote authenticated users to crash Sidekiq by uploading a malicious Helm chart package. Packages::Helm::ExtractFileMetadataService.chart_yaml_content calls chart_yaml.read without a length limit, loading an inflated Chart.yaml into worker memory. The affected ranges are 14.0 through 15.6.6, 15.7.0 through 15.7.5, and 15.8.0; the Helm package registry must be enabled, and interrupted background jobs can stall CI pipelines.

CVSS severity7.5
High
EPSS probability1.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in GitLab allows remote authenticated users to crash Sidekiq by uploading a malicious Helm chart package. Packages::Helm::ExtractFileMetadataService.chart_yaml_content calls chart_yaml.read without a length limit, loading an inflated Chart.yaml into worker memory. The affected ranges are 14.0 through 15.6.6, 15.7.0 through 15.7.5, and 15.8.0; the Helm package registry must be enabled, and interrupted background jobs can stall CI pipelines.

The record

CVE
CVE-2023-0518
Published
Feb 13, 2023
Updated
Mar 21, 2025
Vendor
GitLab
Product
GitLab
Classifications
CWE-400, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 21, 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=>=14.0, <15.6.7
  2. Affected versionversion=>=15.7, <15.7.6
  3. Affected versionversion=>=15.8, <15.8.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GitLab · GitLabversion=>=14.0, <15.6.7; version=>=15.7, <15.7.6; version=>=15.8, <15.8.1

Published CVSS scores

4.3GitLab Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499.004Application or System Exploitation

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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