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Vulnerability record · public intelligence
CVE-2021-21248
CRITICAL

Post-Auth Arbitrary Code execution via Groovy script injection

Published Jan 15, 2021 · Updated Nov 3, 2026

Severity · CVSSCRITICAL · Not scored
Known exploitationNot listed
EPSS / likelihood1.47%
QFinch risk scoreNot available

Original summary

Normalized public record · Updated Nov 3, 2026

Post-Auth Arbitrary Code execution via Groovy script injection

Publisher and source text is retained separately from QFinch interpretation.

QFinch assessment

OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, there is a critical vulnerability involving the build endpoint parameters. InputSpec is used to define parameters of a Build spec. It does so by using dynamically generated Groovy classes. A user able to control job parameters can run arbitrary code on OneDev's server by injecting arbitrary Groovy code. The ultimate result is in the injection of a static constructor that will run arbitrary code. For a full example refer to the referenced GHSA. This issue was addressed in 4.0.3 by escaping special characters such as quote from user input.

Evidence: public source records

Affected products

Affected scope reported by the available public evidence
Affected package, product or rangeFix status
Consult the referenced vendor advisory for affected versions.Consult source advisory

Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.

Remediation

Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.

  1. Confirm the affected product and reachable code path exist in your environment.
  2. Apply the vendor-supported patch or mitigation from the primary advisory.
  3. Rescan the exact deployed revision and retain verification evidence.
Review primary references

Evidence coverage

FIRST-EPSSCVE-LIST-V5
SSVC priority
MEDIUM
Confidence
Not available
Aliases
None reported

Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.

Sources and record history

  1. Security advisory ↗
  2. Patch commit ↗

Record history

Published Jan 15, 2021 · Last refreshed Nov 3, 2026