CVE-2025-59410 Dragonfly tiny file download uses hard coded HTTP protocol

Medium 5.5 Published 17 Sep 2025 Updated 18 Sep 2025

Attackers can intercept and modify tiny file downloads via Man-in-the-Middle attacks because the scheduler hardcodes HTTP instead of HTTPS.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2025-59410?

CVE-2025-59410 is a medium-severity vulnerability in dragonflyoss dragonfly, published on 17 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Dragonfly is an open source P2P-based file distribution and image acceleration system. Prior to 2.1.0, the code in the scheduler for downloading a tiny file is hard coded to use the HTTP protocol, rather than HTTPS. This means that an attacker could perform a Man-in-the-Middle attack, changing the network request so that a different piece of data gets downloaded. This vulnerability is fixed in 2.1.0.

Weakness: CWE-311

Which versions are affected by CVE-2025-59410?

6 open source packages ship an affected version, including github.com/dragonflyoss/dragonfly and d7y.io/dragonfly/v2. It affects 1 product.

Package	Affected	Fixed in
`github.com/dragonflyoss/dragonfly` Go	All versions	None
`github.com/dragonflyoss/dragonfly` Go	All versions	`2.1.0`
`github.com/dragonflyoss/dragonfly` Go	All versions	`2.1.0`
`d7y.io/dragonfly/v2` Go	All versions	`2.1.0`
`d7y.io/dragonfly/v2` Go	All versions	`2.1.0`
`d7y.io/dragonfly/v2` Go	All versions	`2.1.0`

Products include Linuxfoundation Dragonfly.

How do I fix CVE-2025-59410?

Upgrade github.com/dragonflyoss/dragonfly to 2.1.0 or later.

Is CVE-2025-59410 being exploited?

There is no known exploitation of CVE-2025-59410 in the wild and no public exploit code.

Sources

Also known as GHSA-mcvp-rpgg-9273, GO-2025-3974.