CVE-2021-28794
The unofficial ShellCheck extension before 0.13.4 for Visual Studio Code mishandles shellcheck...
The unofficial ShellCheck extension before 0.13.4 for Visual Studio Code mishandles shellcheck.executablePath.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
The unofficial ShellCheck extension before 0.13.4 for Visual Studio Code mishandles shellcheck.executablePath.
- Record
CVE-2021-28794- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
The unofficial ShellCheck extension before 0.13.4 for Visual Studio Code mishandles shellcheck.executablePath.
- Record
CVE-2021-28794- Updated
- 2026-11-02
EUVDEUVD-2021-15451 No score
The unofficial ShellCheck extension before 0.13.4 for Visual Studio Code mishandles shellcheck.executablePath.
- Record
EUVD-2021-15451- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8w84-ww36-m2xq
The unofficial ShellCheck extension before 0.13.4 for Visual Studio Code mishandles shellcheck...
The unofficial ShellCheck extension before 0.13.4 for Visual Studio Code mishandles shellcheck.executablePath.
- Record
GHSA-8w84-ww36-m2xq- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSV
The unofficial ShellCheck extension before 0.13.4 for Visual Studio Code mishandles shellcheck.executablePath.
- Record
CVE-2021-28794- CVSS 3.1
- 9.8 Critical
CVSS: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
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-28794 is a critical vulnerability (CVSS 9.8) in Shellcheck Project Shellcheck, published March 18, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.83%, the 79th percentile. No source names a fixed version.