Vulnerability · Published Sep 17, 2025 · Assigned by GitHub_M

CVE-2025-59354Dragonfly has weak integrity checks for downloaded files

Medium 5.5

In plain English

A medium-severity security flaw in dragonfly from dragonflyoss. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)5.5Medium

Exploit odds (30 days)0.2%top 94.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Dragonfly is an open source P2P-based file distribution and image acceleration system. Prior to 2.1.0, the DragonFly2 uses a variety of hash functions, including the MD5 hash, for downloaded files. This allows attackers to replace files with malicious ones that have a colliding hash. This vulnerability is fixed in 2.1.0.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	d7y.io/dragonfly/v2	2.1.0	GHSA-hx2h-vjw2-8r54
Go	d7y.io/dragonfly/v2	2.1.0	GO-2025-3973
Go	github.com/dragonflyoss/dragonfly	2.1.0	GHSA-hx2h-vjw2-8r54
Go	github.com/dragonflyoss/dragonfly	no fix listed	GO-2025-3973

Affected products (as reported)

Vendor	Product	Versions
dragonflyoss	dragonfly	< 2.1.0

Weakness: CWE-328 · Vector: 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

References

https://github.com/dragonflyoss/dragonfly/security/advisories/GHSA-hx2h-vjw2-8r54 x_refsource_CONFIRM
https://github.com/dragonflyoss/dragonfly/blob/main/docs/security/dragonfly-comprehensive-report-2023.pdf x_refsource_MISC