CVE-2021-25924Network attack vector

Command execution via missing content-type verification

Published Apr 1, 2021 · Updated Aug 3, 2024

CSRF in Thoughtworks GoCD 19.6.0 through 21.1.0 allows remote attackers to execute system commands through a victim's browser. BackupConfigControllerV1 applied response content types but failed to verify request content types on its base and wildcard routes, permitting cross-origin form requests to the backup API. Exploitation requires an authenticated administrator to follow attacker-controlled content and can alter backup settings or run a post_backup_script as the GoCD server account.

CVSS severity8.8
High
EPSS probability0.75%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSRF in Thoughtworks GoCD 19.6.0 through 21.1.0 allows remote attackers to execute system commands through a victim's browser. BackupConfigControllerV1 applied response content types but failed to verify request content types on its base and wildcard routes, permitting cross-origin form requests to the backup API. Exploitation requires an authenticated administrator to follow attacker-controlled content and can alter backup settings or run a post_backup_script as the GoCD server account.

The record

CVE
CVE-2021-25924
Published
Apr 1, 2021
Updated
Aug 3, 2024
Vendor
Thoughtworks
Product
GoCD
Classifications
CWE-352, T1059, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 1, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=19.6.0, 19.7.0, 19.8.0, 19.9.0, 19.10.0, 19.11.0, 19.12.0, 20.1.0, 20.2.0, 20.3.0, 20.4.0, 20.5.0, 20.6.0, 20.7.0, 20.8.0, 20.9.0, 20.10.0, 21.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Thoughtworks · GoCDversion=19.6.0, 19.7.0, 19.8.0, 19.9.0, 19.10.0, 19.11.0, 19.12.0, 20.1.0, 20.2.0, 20.3.0, 20.4.0, 20.5.0, 20.6.0, 20.7.0, 20.8.0, 20.9.0, 20.10.0, 21.1.0

Published CVSS scores

9.3NVDAV:N/AC:M/Au:N/C:C/I:C/A:C
8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1059Command and Scripting Interpreter
T1204.001User Execution: Malicious Link

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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