CVE-2021-21361

Credential disclosure via environment-variable logging

Published Mar 9, 2021 · Updated Aug 3, 2024

Information disclosure in the Gradle Vagrant plugin before 3.0.0 allows attackers to read credentials from public CI/CD logs. GDKExternalProcessExecutor.printCommandLineArgs interpolates the envp list into an info-level log message before executing an external command. Exposure requires sensitive environment variables to be supplied to the plugin and the resulting build log to be accessible to attackers.

CVSS severity7.4
High
EPSS probability1.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Information disclosure in the Gradle Vagrant plugin before 3.0.0 allows attackers to read credentials from public CI/CD logs. GDKExternalProcessExecutor.printCommandLineArgs interpolates the envp list into an info-level log message before executing an external command. Exposure requires sensitive environment variables to be supplied to the plugin and the resulting build log to be accessible to attackers.

The record

CVE
CVE-2021-21361
Published
Mar 9, 2021
Updated
Aug 3, 2024
Vendor
Jonathan Leitschuh
Product
security-research
Classifications
CWE-532, CWE-779, T1552.001
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 9, 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=< 3.0.0

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Jonathan Leitschuh · security-researchversion=< 3.0.0

Published CVSS scores

3.3NIST NVDAV:A/AC:L/Au:N/C:P/I:N/A:N
6.5NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.4GitHub Security AdvisoryCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
CWE-779Logging of Excessive Data
T1552.001Unsecured Credentials: Credentials In Files

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo