CVE-2021-3727

OS Command Injection in ohmyzsh/ohmyzsh

7.5 High

CVE-2021-3727 is a high vulnerability (CVSS 7.5) in Ohmyzsh Ohmyzsh/ohmyzsh, published November 30, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.03%, the 63rd percentile. No source names a fixed version.

Vulnerability in `rand-quote` and `hitokoto` plugins Description: the `rand-quote` and `hitokoto` fetch quotes from quotationspage.com and hitokoto.cn respectively, do some process on them and then use `print -P` to print them. If these quotes contained the proper symbols, they could trigger command injection. Given that they're an external API, it's not possible to know if the quotes are safe to use. Fixed in: 72928432. Impacted areas: - `rand-quote` plugin (`quote` function). - `hitokoto` plugin (`hitokoto` function).

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

1.03%Up 0.6 points since Dec 1, 2021

What each source reports

CVE List Score used 7.5

OS Command Injection in ohmyzsh/ohmyzsh

Vulnerability in `rand-quote` and `hitokoto` plugins Description: the `rand-quote` and `hitokoto` fetch quotes from quotationspage.com and hitokoto.cn respectively, do some process on them and then use `print -P` to print them. If these quotes contained the proper symbols, they could trigger command injection. Given that they're an external API, it's not possible to know if the quotes are safe to use. Fixed in: 72928432. Impacted areas: - `rand-quote` plugin (`quote` function). - `hitokoto` plugin (`hitokoto` function).

Record: CVE-2021-3727
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-78
Updated: 2026-11-02

EUVDEUVD-2021-27007 7.5

Vulnerability in `rand-quote` and `hitokoto` plugins Description: the `rand-quote` and `hitokoto` fetch quotes from quotationspage.com and hitokoto.cn respectively, do some process on them and then use `print -P` to print them. If these quotes contained the proper symbols, they could trigger command injection. Given that they're an external API, it's not possible to know if the quotes are safe to use. Fixed in: 72928432. Impacted areas: - `rand-quote` plugin (`quote` function). - `hitokoto` plugin (`hitokoto` function).

Record: EUVD-2021-27007
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-03

GitHub AdvisoriesGHSA-vg23-f593-6r27 No score

# Vulnerability in `rand-quote` and `hitokoto` plugins **Description**: the `rand-quote` and ...

Vulnerability in `rand-quote` and `hitokoto` plugins Description: the `rand-quote` and `hitokoto` fetch quotes from quotationspage.com and hitokoto.cn respectively, do some process on them and then use `print -P` to print them. If these quotes contained the proper symbols, they could trigger command injection. Given that they're an external API, it's not possible to know if the quotes are safe to use. Fixed in: 72928432. Impacted areas: - `rand-quote` plugin (`quote` function). - `hitokoto` plugin (`hitokoto` function).

Record: GHSA-vg23-f593-6r27
Weakness: CWE-78
Updated: 2026-11-02

NVD 7.5

Vulnerability in `rand-quote` and `hitokoto` plugins Description: the `rand-quote` and `hitokoto` fetch quotes from quotationspage.com and hitokoto.cn respectively, do some process on them and then use `print -P` to print them. If these quotes contained the proper symbols, they could trigger command injection. Given that they're an external API, it's not possible to know if the quotes are safe to use. Fixed in: 72928432. Impacted areas: - `rand-quote` plugin (`quote` function). - `hitokoto` plugin (`hitokoto` function).

Record: CVE-2021-3727
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-78
Updated: 2026-11-02

OSV 9.8

Vulnerability in `rand-quote` and `hitokoto` plugins Description: the `rand-quote` and `hitokoto` fetch quotes from quotationspage.com and hitokoto.cn respectively, do some process on them and then use `print -P` to print them. If these quotes contained the proper symbols, they could trigger command injection. Given that they're an external API, it's not possible to know if the quotes are safe to use. Fixed in: 72928432. Impacted areas: - `rand-quote` plugin (`quote` function). - `hitokoto` plugin (`hitokoto` function).

Record: CVE-2021-3727
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

History

History
When	Changed	Sources
2026-11-03	aliases	EUVD
2026-11-02	created	CVE List, GitHub Advisories, NVD, OSV