DragonFly's tiny file download uses hard coded HTTP protocol

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

5.5 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P · score source

EPSS

• CVE-2025-59410: 0.14% estimated exploitation activity in the next 30 days; percentile 3.32 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Impact 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. Due to the use of weak integrity checks (TOB-DF2-15), this modification of the data may go unnoticed. A network-level attacker who cannot join a peer-to-peer network performs a Man-in-the-Middle attack on peers. The adversary can do this because peers (partially) communicate over plaintext HTTP protocol. The attack chains this vulnerability with the one described in TOB-DF2-15 to replace correct files with malicious ones. Unconscious peers use the malicious files. Patches - Dragonfy v2.1.0 and above. Workarounds There are no effective workarounds, beyond upgrading. References A third party security audit was performed by Trail of Bits, you can see the full report. If you have any questions or comments about this…

Published by the source

17 Sep 2025, 20:23 UTC

Last modified by the source

26 Sep 2025, 16:20 UTC

Source last checked

26 Oct 2026, 15:10 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-mcvp-rpgg-9273

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# Patch Next advisory brief: CVE-2025-59410

Advisory: DragonFly's tiny file download uses hard coded HTTP protocol
IDs: CVE-2025-59410, GHSA-mcvp-rpgg-9273
Record: https://patchnext.com/advisories/cve-2025-59410 (revision 1, source checked 26 Oct 2026, 15:10 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: github.com/dragonflyoss/dragonfly 2.1.0; d7y.io/dragonfly/v2 2.1.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/dragonflyoss/dragonfly: affected < 2.1.0; fixed in 2.1.0
- Go d7y.io/dragonfly/v2: affected < 2.1.0; fixed in 2.1.0

## Suggested inspection (read-only)
- Go github.com/dragonflyoss/dragonfly: check the installed version with your package manager.
- Go d7y.io/dragonfly/v2: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on github.com/dragonflyoss/dragonfly, d7y.io/dragonfly/v2.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-mcvp-rpgg-9273 (GitHub-reviewed advisory GHSA-mcvp-rpgg-9273 lists affected ranges: Go github.com/dragonflyoss/dragonfly >=0 =0 <2.1.0)

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