CVE-2022-3478Public exploitNetwork attack vector

Sidekiq crash via unchecked NuGet decompression

Published Jan 24, 2023 · Updated Apr 2, 2025

Resource exhaustion in GitLab allows remote authenticated users to crash Sidekiq by uploading a crafted NuGet package. The NuGet metadata extraction service trusts the archive's declared .nuspec size, then reads the entire decompressed entry into memory without an enforced limit. Package-registry credentials and an enabled NuGet repository are required; an OOM termination interrupts jobs on the affected worker and can delay pipelines.

CVSS severity4.3
Medium
EPSS probability1.03%
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 crafted NuGet package. The NuGet metadata extraction service trusts the archive's declared .nuspec size, then reads the entire decompressed entry into memory without an enforced limit. Package-registry credentials and an enabled NuGet repository are required; an OOM termination interrupts jobs on the affected worker and can delay pipelines.

The record

CVE
CVE-2022-3478
Published
Jan 24, 2023
Updated
Apr 2, 2025
Vendor
GitLab
Product
GitLab
Classifications
CWE-434, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 24, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 2, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>=12.8, <15.4.6
  2. Affected versionversion=>=15.5, <15.5.5
  3. Affected versionversion=>=15.6, <15.6.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GitLab · GitLabversion=>=12.8, <15.4.6; version=>=15.5, <15.5.5; version=>=15.6, <15.6.1

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

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
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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