Vulnerability in Dragonflyoss Dragonfly
CVE-2025-59347
Dragonfly is an open source P2P-based file distribution and image acceleration system. Prior to 2.1.0, The Manager disables TLS certificate verification in HTTP clients. The clients are not configurable, so users have no way to re-enable the verification. A Manager processes dozens of preheat jobs. An adversary performs a network-level Man-in-the-Middle attack, providing invalid data to the Manager. The Manager preheats with the wrong data, which later causes a denial of service and file integrity problems. This vulnerability is fixed in 2.1.0.
Vulnerability class: Improper Certificate Validation
EPSS: 0.002 (6.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H.
Affected products
- Dragonflyoss Dragonfly — versions < 2.1.0
- Linuxfoundation Dragonfly
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Third Party Advisory)
- security-advisories@github.com (Product, x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-59347?
- CVE-2025-59347 is a medium-severity vulnerability in Dragonflyoss Dragonfly, classified under Improper Certificate Validation. CVSS score: 6.5/10. Published 2025-09-17.
- How severe is CVE-2025-59347?
- Medium severity. CVSS v3 base score is 6.5 out of 10.