CVE-2024-42471Network attack vector

Arbitrary file write via unchecked artifact paths

Published Sep 2, 2024 · Updated Aug 27, 2025

Path traversal in GitHub Actions Toolkit 2.0.0 through 2.1.1 allows attackers to write files via crafted artifact entries. The downloadArtifactInternal, downloadArtifactPublic, and streamExtractExternal paths passed entry names to unzip-stream extraction without confining resolved paths to the destination directory. Exploitation requires a consuming workflow to extract an attacker-controlled artifact, after which traversal entries overwrite files writable by the runner process.

CVSS severity7.3
High
EPSS probability3.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in GitHub Actions Toolkit 2.0.0 through 2.1.1 allows attackers to write files via crafted artifact entries. The downloadArtifactInternal, downloadArtifactPublic, and streamExtractExternal paths passed entry names to unzip-stream extraction without confining resolved paths to the destination directory. Exploitation requires a consuming workflow to extract an attacker-controlled artifact, after which traversal entries overwrite files writable by the runner process.

The record

CVE
CVE-2024-42471
Published
Sep 2, 2024
Updated
Aug 27, 2025
Vendor
Twitter
Product
GitHub Actions Toolkit
Classifications
CWE-22, T1195.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 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=>= 2.0.0, < 2.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Twitter · GitHub Actions Toolkitversion=>= 2.0.0, < 2.1.2

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
7.3GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1195.002Compromise Software Supply Chain

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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