TI-2025-36910 Aliases CVE-2025-59349 GHSA-8425-8r2f-mrv6

Directories created via os.MkdirAll are not checked for permissions

LOW 10CWE-732Published 2025-09-17 · Updated 2025-09-18

Key facts

Attack vector: Local
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: None · Low · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

Summary

Dragonfly is an open source P2P-based file distribution and image acceleration system. Prior to 2.1.0, DragonFly2 uses the os.MkdirAll function to create certain directory paths with specific access permissions. This function does not perform any permission checks when a given directory path already exists. This allows a local attacker to create a directory to be used later by DragonFly2 with broad permissions before DragonFly2 does so, potentially allowing the attacker to tamper with the files. This vulnerability is fixed in 2.1.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00116 1st percentileScored 2026-11-07

Fix Fixed dragonfly (dragonflyoss): 2.1.0github.com/dragonflyoss/dragonfly (Go): 2.1.0+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
backstage	dragonfly	before 2.1.0	2.1.0	Patch available	CNA
—	github.com/dragonflyoss/dragonfly (Go)	before 2.1.0	2.1.0	Patch available	GHSA-8425-8r2f-mrv6
—	d7y.io/dragonfly/v2 (Go)	before 2.1.0	2.1.0	Patch available	GHSA-8425-8r2f-mrv6

dragonfly Vendorbackstage Affected before 2.1.0 Fixed in 2.1.0 Patch available CNA
github.com/dragonflyoss/dragonfly (Go) Vendor— Affected before 2.1.0 Fixed in 2.1.0 Patch available GHSA-8425-8r2f-mrv6
d7y.io/dragonfly/v2 (Go) Vendor— Affected before 2.1.0 Fixed in 2.1.0 Patch available GHSA-8425-8r2f-mrv6

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:linuxfoundation:dragonfly::::::go::*	before 2.1.0	Vulnerable	backstage

cpe:2.3:a:linuxfoundation:dragonfly:*:*:*:*:*:go:*:* Versions before 2.1.0 Vulnerable ·backstage

Remediation

Fix · CNA dragonfly (dragonflyoss) Fixed in 2.1.0
Fix · GHSA-8425-8r2f-mrv6 github.com/dragonflyoss/dragonfly (Go) Fixed in 2.1.0 Advisory →
Fix · GHSA-8425-8r2f-mrv6 d7y.io/dragonfly/v2 (Go) Fixed in 2.1.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2025-59349
2026-10-03 Alias added: GHSA-8425-8r2f-mrv6

References

Patch 1

https://github.com/dragonflyoss/dragonfly/security/advisories/GHSA-8425-8r2f-mrv6

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2025-59349

Other 3

TI-2023-12294 Dragonfly2 vulnerable to hard coded cyptographic key CVSS 3.1CRITICAL 9.8
TI-2025-36909 Dragonfly incorrectly handles a task structure’s usedTraffic field CVSS 4.0MEDIUM 5.5
TI-2025-36907 Dragonfly server-side request forgery vulnerability CVSS 4.0MEDIUM 5.5
TI-2025-36908 Dragonfly Manager makes requests to external endpoints with disabled TLS authentication CVSS 4.0LOW 2.7
TI-2026-19442 Dragonfly Manager Job API Allows Unauthenticated Access CVSS 4.0HIGH 8.9
TI-2025-36906 Dragonfly did not enable authentication for some Manager’s endpoints CVSS 4.0HIGH 7.7

See all 12 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences