CVE-2025-59348 json
Dragonfly incorrectly handles a task structure’s usedTraffic field
published 2025-09-17 13 mo ago modified 2026-06-17 4 mo ago also GHSA-2qgr-gfvj-qpcr , GO-2025-3963 , EUVD-2025-29770
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 29%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- go github.com/dragonflyoss/dragonfly 2.1.0
- go d7y.io/dragonfly/v2 2.1.0
- linuxfoundation dragonfly 2.1.0
- govulncheck-vulndb SLE Module for Package Hub 15 SP6, openSUSE Leap 15.6 0.0.20251023T162509-150000.1.110.1
suse advisories SUSE-SU-2025:3799-1
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
- govulncheck-vulndb openSUSE Tumbleweed 0.0.20250924T192141-1.1
opensuse advisories openSUSE-SU-2026:21483-1openSUSE-SU-2025:15576-1
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 13 mo ago
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.5 | 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 |
| CNA | 4.0 | 5.5 | 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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/dragonflyoss/dragonfly | <2.1.0 all versions |
2.1.0 |
| go | d7y.io/dragonfly/v2 | <2.1.0 |
2.1.0 |
Affected products
- dragonflyoss dragonfly
Classification
- Weakness
-
- CWE-457 Use of Uninitialized Variable
References
-
github.com
/dragonflyoss/dragonfly/security/advisories/GHSA-2qgr-gfvj-qpcr
web, patch, third-party-advisory, advisory
-
github.com
/dragonflyoss/dragonfly/blob/main/docs/security/dragonfly-comprehensive-report-2023.pdf
web, product
-
nvd.nist.gov
/vuln/detail/CVE-2025-59348
advisory
-
github.com
/dragonflyoss/dragonfly
package
-
pkg.go.dev
/vuln/GO-2025-3963
web
Sources
- CVE List CVE-2025-59348
- GitHub Advisory GHSA-2qgr-gfvj-qpcr
- NVD CVE-2025-59348
- OSV GO-2025-3963
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