CVE-2025-59348CWE-457

Dragonfly incorrectly handles a task structure’s usedTraffic field

Medium · published September 17, 2025

CVSS v4.0
5.5
EPSS
0%
Percentile
28.3
In the wild
Unconfirmed
What it is

Dragonfly is an open source P2P-based file distribution and image acceleration system. Prior to 2.1.0, the processPieceFromSource method does not update the structure’s usedTraffic field, because an uninitialized variable n is used as a guard to the AddTraffic method call, instead of the result.Size variable. A task is processed by a peer. The usedTraffic metadata is not updated during the processing. Rate limiting is incorrectly applied, leading to a denial-of-service condition for the peer. This vulnerability is fixed in 2.1.0.

The record
Technical detail
CVSS v4.0
5.5 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.00358 · 28.3th percentile
Weakness
CWE-457 · Use of Uninitialized Variable
Published
2025-09-17T19:30Z
EPSS history
Timeline
  • 17 SEP 19:30Z
    Dragonfly incorrectly handles a task structure’s usedTraffic field
    cvelistv5