What is the CVSS score of CVE-2021-3726?

CVE-2021-3726 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.8%.

Is there a patch available for CVE-2021-3726?

Yes, a patch is available for CVE-2021-3726. Update the affected software to the latest version immediately.

Oh My Zsh CVE-2021-3726

CRITICAL

OS Command Injection (CWE-78)

2021-11-30 security@huntr.dev

Command Injection Oh My Zsh

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Nov 30, 2021 - 10:15 nvd

CRITICAL 9.8

DescriptionNVD

Vulnerability in `title` function Description: the `title` function defined in `lib/termsupport.zsh` uses `print` to set the terminal title to a user-supplied string. In Oh My Zsh, this function is always used securely, but custom user code could use the `title` function in a way that is unsafe. Fixed in: a263cdac. Impacted areas: - `title` function in `lib/termsupport.zsh`. - Custom user code using the `title` function.

AnalysisAI

Vulnerability in `title` function Description: the `title` function defined in `lib/termsupport.zsh` uses `print` to set the terminal title to a user-supplied string. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This OS Command Injection vulnerability could allow attackers to execute arbitrary operating system commands on the host.

Technical ContextAI

This vulnerability is classified as OS Command Injection (CWE-78), which allows attackers to execute arbitrary operating system commands on the host.

Vulnerability in `title` function Description: the `title` function defined in `lib/termsupport.zsh` uses `print` to set the terminal title to a user-supplied string. In Oh My Zsh, this function is always used securely, but custom user code could use the `title` function in a way that is unsafe. Fixed in: a263cdac. Impacted areas: - `title` function in `lib/termsupport.zsh`. - Custom user code using the `title` function. Affected products include: Planetargon Oh My Zsh.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Avoid passing user input to shell commands. Use language-specific APIs instead of shell execution. Apply strict input validation with allowlists.