CVE-2021-32673

Arbitrary command execution via unescaped Git hashes

Published Jun 8, 2021 · Updated Aug 3, 2024

OS command injection in reg-keygen-git-hash-plugin in reg-viz reg-suit before 0.10.16 allows remote attackers to execute arbitrary commands. GitCmdClient interpolates untrusted hash and revision values into shell command strings passed to execSync in containedBranches, logTime, logBetween, and mergeBase. No privileges or user interaction are required, but a crafted Git reference must reach the plugin's snapshot-key workflow.

CVSS severity9.8
Critical
EPSS probability1.94%
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

OS command injection in reg-keygen-git-hash-plugin in reg-viz reg-suit before 0.10.16 allows remote attackers to execute arbitrary commands. GitCmdClient interpolates untrusted hash and revision values into shell command strings passed to execSync in containedBranches, logTime, logBetween, and mergeBase. No privileges or user interaction are required, but a crafted Git reference must reach the plugin's snapshot-key workflow.

The record

CVE
CVE-2021-32673
Published
Jun 8, 2021
Updated
Aug 3, 2024
Vendor
reg-viz
Product
reg-suit
Classifications
CWE-94, CWE-78, T1059
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 8, 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=< 0.10.16

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

reg-viz · reg-suitversion=< 0.10.16

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
8.8GitHub, Inc.CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L
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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

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