6.5

CVE-2025-59347: dragonflyoss dragonfly Improper Certificate Validation

CVSS: 6.5v3.1MediumAnalyzed
AliasesGHSA-98x5-jw98-6c97GO-2025-3966
Published 17-09-2025Last modified 17-09-2025
Open JSON

Vulnerability summary

CVE-2025-59347 is a medium (CVSS 6.5) Improper Certificate Validation vulnerability in dragonflyoss dragonfly. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 5.9% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.17%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 3
OPENSUSE-SU-2025:15576-1OPENSUSE-SU-2026:21483-1SUSE-SU-2025:3799-1

Timeline

  1. 17-09-2025
    PublishedVulnerability first disclosed.
  2. 17-09-2025
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

0.00 pp

From 0.17% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.17%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

D7y.io/dragonfly1 product
  • v2< 2.1.0
Dragonflyoss1 product
Github.com/dragonflyoss1 product
  • dragonfly< 2.1.0 | All versions (No fix recorded)
Linuxfoundation1 product

4 vendors · 4 products

References

5 links