CVE-2025-59348
HIGHDragonfly < 2.1.0 - Denial of Service via Uninitialized Variable in ProcessPieceFromSource
Title source: llmDescription
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.
References (2)
Core 2
Core References
Patch, Third Party Advisory x_refsource_confirm
https://github.com/dragonflyoss/dragonfly/security/advisories/GHSA-2qgr-gfvj-qpcr
Scores
CVSS v3
7.5
EPSS
0.0033
EPSS Percentile
24.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-457
Status
published
Products (3)
dragonfly/v2
0 - 2.1.0Go
dragonflyoss/dragonfly
0 - 2.1.0Go
linuxfoundation/dragonfly
< 2.1.0
Published
Sep 17, 2025
Tracked Since
Feb 18, 2026