Auth bypass in Dragonflyoss Dragonfly
CVE-2025-59353
Dragonfly is an open source P2P-based file distribution and image acceleration system. Prior to 2.1.0, a peer can obtain a valid TLS certificate for arbitrary IP addresses, effectively rendering the mTLS authentication useless. The issue is that the Manager’s Certificate gRPC service does not validate if the requested IP addresses “belong to” the peer requesting the certificate—that is, if the peer connects from the same IP address as the one provided in the certificate request. This vulnerability is fixed in 2.1.0.
Vulnerability class: Improper Certificate Validation
EPSS: 0.002 (14.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Dragonflyoss Dragonfly — versions < 2.1.0
- Linuxfoundation Dragonfly
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Patch)
- security-advisories@github.com (Product, x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-59353?
- CVE-2025-59353 is a high-severity vulnerability in Dragonflyoss Dragonfly, classified under Improper Certificate Validation. CVSS score: 7.5/10. Published 2025-09-17.
- How severe is CVE-2025-59353?
- High severity. CVSS v3 base score is 7.5 out of 10.