RCE in Ohmyzsh Ohmyzsh/ohmyzsh
CVE-2021-3726
# 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](https://github.com/ohmyzsh/ohmyzsh/commit/a263cdac). **Impacted areas**: - `title` function in `lib/termsupport.zsh`. - Custom user code using the `title` function.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (55.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: +0.000
Affected products
- Ohmyzsh Ohmyzsh/ohmyzsh — versions unspecified
- Planetargon Oh My Zsh
Weakness classification (CWE)
References
- github.com/ohmyzsh/ohmyzsh/commit/a263cdac (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-3726?
- CVE-2021-3726 is a high-severity vulnerability in Ohmyzsh Ohmyzsh/ohmyzsh, classified under OS Command Injection. CVSS score: 7.5/10. Published 2021-11-30.
- How severe is CVE-2021-3726?
- High severity. CVSS v3 base score is 7.5 out of 10.