CVE-2025-59348
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-17

Last updated on: 2025-09-18

Assigner: GitHub, Inc.

Description
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.
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Meta Information
Published
2025-09-17
Last Modified
2025-09-18
Generated
2026-06-16
AI Q&A
2025-09-17
EPSS Evaluated
2026-06-15
NVD
CVE-2025-59348
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linuxfoundation dragonfly to 2.1.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-457 The code uses a variable that has not been initialized, leading to unpredictable or unintended results.
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Executive Summary

This vulnerability in Dragonfly, an open source P2P file distribution system, occurs because the processPieceFromSource method does not update the usedTraffic field correctly. An uninitialized variable 'n' is used instead of the actual result.Size variable, causing the usedTraffic metadata to remain unchanged during task processing. As a result, rate limiting is applied incorrectly, which can lead to a denial-of-service condition for the peer processing the task. The issue is fixed in version 2.1.0.

Impact Analysis

The vulnerability can cause a denial-of-service condition for peers in the Dragonfly system because rate limiting is not applied correctly. This means that affected peers may become overwhelmed or unable to process tasks properly, potentially disrupting file distribution and image acceleration services relying on Dragonfly.

Mitigation Strategies

Upgrade Dragonfly to version 2.1.0 or later, as this version contains the fix for the vulnerability where the usedTraffic field is not updated correctly, preventing the denial-of-service condition.

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