CVE-2021-30502
The unofficial vscode-ghc-simple (aka Simple Glasgow Haskell Compiler) extension before 0.2.3 for Visual Studio Code allows remote code execution via a crafted workspace configuration with replCommand.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.90%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The unofficial vscode-ghc-simple (aka Simple Glasgow Haskell Compiler) extension before 0.2.3 for Visual Studio Code allows remote code execution via a crafted workspace configuration with replCommand.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.90% probability · 87th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- simple glasgow haskell compiler project/simple glasgow haskell compiler
- Source
- cve@mitre.org
EPSS 2.9% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/dramforever/vscode-ghc-simple/blob/master/CHANGELOG.md#v023Release Notes, Third Party Advisory
- https://github.com/dramforever/vscode-ghc-simple/commit/bc7f6f0b857dade46ea51496d8bd1a4edef39b46Patch, Third Party Advisory
- https://github.com/dramforever/vscode-ghc-simple/releasesRelease Notes, Third Party Advisory
- https://vuln.ryotak.me/advisories/38Third Party Advisory
- https://github.com/dramforever/vscode-ghc-simple/blob/master/CHANGELOG.md#v023Release Notes, Third Party Advisory
- https://github.com/dramforever/vscode-ghc-simple/commit/bc7f6f0b857dade46ea51496d8bd1a4edef39b46Patch, Third Party Advisory
- https://github.com/dramforever/vscode-ghc-simple/releasesRelease Notes, Third Party Advisory
- https://vuln.ryotak.me/advisories/38Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.