CVE-2019-25586 Deluge 1.3.15 Denial of Service via URL Field
Local attackers can crash the Deluge BitTorrent client by inputting an excessively long string into the URL field during torrent addition.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-25586?
CVE-2019-25586 is a medium-severity denial of service vulnerability in Dev Deluge, published on 22 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Deluge 1.3.15 contains a denial of service vulnerability that allows local attackers to crash the application by supplying an excessively long string in the URL field. Attackers can paste a buffer of 5000 characters into the 'From URL' field during torrent addition to trigger an application crash.
Weakness: CWE-466
Which versions are affected by CVE-2019-25586?
1 open source package ship an affected version, including deluge. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
deluge PyPI | All versions to 1.3.15 | None |
Products include Deluge-Torrent Deluge.
How do I fix CVE-2019-25586?
No fix has been published for CVE-2019-25586 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2019-25586 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-25586 exists.
Other vulnerabilities in Dev Deluge
Sources
Also known as GHSA-rmf4-rvgx-3jfq, PYSEC-2026-39, UBUNTU-CVE-2019-25586.