CVE-2021-43290Public exploitNetwork attack vector

Arbitrary file write via unvalidated stage counter

Published Apr 14, 2022 · Updated Aug 4, 2024

Path traversal in ThoughtWorks GoCD before 21.3.0 allows remote authenticated users to write files outside the artifact directory. ArtifactsController validates filePath but uses the unvalidated stageCounter value to construct the destination passed to saveOrAppendFile. A compromised or impersonated GoCD agent is required, and the attacker controls file contents and name but not the final job-derived subdirectory.

CVSS severity9.8
Critical
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 ThoughtWorks GoCD before 21.3.0 allows remote authenticated users to write files outside the artifact directory. ArtifactsController validates filePath but uses the unvalidated stageCounter value to construct the destination passed to saveOrAppendFile. A compromised or impersonated GoCD agent is required, and the attacker controls file contents and name but not the final job-derived subdirectory.

The record

CVE
CVE-2021-43290
Published
Apr 14, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-22, T1105
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 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-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1105Ingress Tool Transfer

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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