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Dragonfly CVE-2025-59345

HIGH
Missing Authentication for Critical Function (CWE-306)
2025-09-17 security-advisories@github.com
7.7
CVSS 4.0 · GitHub Advisory
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication required for critical functions
MITRE ATT&CK

1 technique across 1 tactic: Initial Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 7.7 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. EPSS exploitation probability: 0.07%.

Exploit ScenarioDerived

A remote attacker could access critical functionality without authentication by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 28, 2026

Dragonfly is an open source P2P-based file distribution and image acceleration system. Rated high severity (CVSS 7.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Require authentication for all sensitive operations, implement defense in depth.

Affected Packages

go d7y.io/dragonfly/v2 fix: 2.1.0
go github.com/dragonflyoss/dragonfly fix: 2.1.0

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 2 packages in go

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Missing Authentication for Critical Function (CWE-306), which allows attackers to access critical functionality without authentication. Dragonfly is an open source P2P-based file distribution and image acceleration system. Prior to 2.1.0, The /api/v1/jobs and /preheats endpoints in Manager web UI are accessible without authentication. Any user with network access to the Manager can create, delete, and modify jobs, and create preheat jobs. An unauthenticated adversary with network access to a Manager web UI uses /api/v1/jobs endpoint to create hundreds of useless jobs. The Manager is in a denial-of-service state, and stops accepting requests from valid administrators. This vulnerability is fixed in 2.1.0. Affected products include: Linuxfoundation Dragonfly. Version information: Prior to 2.1.0.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

GitHub Advisory PRIMARY 7.7 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P
SUSE 9.1 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vulnerable system: Confidentiality
None
Vulnerable system: Integrity
High
Vulnerable system: Availability
None
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

Lifecycle Timeline

2
Patch released
Mar 31, 2026 - 21:13 nvd
Patch available
CVE Published
Sep 17, 2025 - 19:15 nvd
HIGH 7.7

DescriptionGitHub Advisory

Dragonfly is an open source P2P-based file distribution and image acceleration system. Prior to 2.1.0, The /api/v1/jobs and /preheats endpoints in Manager web UI are accessible without authentication. Any user with network access to the Manager can create, delete, and modify jobs, and create preheat jobs. An unauthenticated adversary with network access to a Manager web UI uses /api/v1/jobs endpoint to create hundreds of useless jobs. The Manager is in a denial-of-service state, and stops accepting requests from valid administrators. This vulnerability is fixed in 2.1.0.

Executive ViewAI

Why It Matters

Organizations using Dragonfly face notable risk from CVE-2025-59345, a missing authentication vulnerability rated CVSS 7.7. Attackers could bypass security controls to gain unauthorized access to protected resources and sensitive data. Organizations should apply vendor updates when available and consider compensating controls in the interim.

Business Impact: High
Compensating Controls

Apply vendor patch. If immediate patching is not feasible: (1) Implement network-level access controls; (2) Enable MFA where possible; (3) Monitor authentication logs for anomalous access.

Threat Intelligence Overview

EPSS Score
0.1%
Top 79% exploitable
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.1%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
High

Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)GitHub Advisory

cpe:2.3:a:linuxfoundation:dragonfly:*:*:*:*:*:go:*:*
CVE-2026-24124 CRITICAL POC
9.8 Jan 22

Dragonfly P2P file distribution system versions 2.4.1-rc.0 and below have a missing authentication vulnerability allowin

CVE-2021-33564 CRITICAL POC
9.8 May 29

An argument injection vulnerability in the Dragonfly gem before 1.4.0 for Ruby allows remote attackers to read and write

CVE-2025-59353 HIGH POC
7.7 Sep 17

Dragonfly is an open source P2P-based file distribution and image acceleration system. Rated high severity (CVSS 7.7), t

CVE-2026-104192 CRITICAL
9.6 Oct 13

A double-free in Dragonfly's RDB stream loader (OpaqueObjLoader::CreateStream in src/server/rdb_load.cc) lets a remote,

CVE-2026-62357 HIGH
8.8 Aug 18

Integer overflow in Dragonfly's Count-Min Sketch implementation prior to v1.40.0 allows unauthenticated remote clients t

CVE-2026-111279 HIGH
8.7 Oct 15

Unauthenticated remote attackers can crash Dragonfly through 2.0.2 by issuing a single HRANDFIELD, ZRANDMEMBER, or SRAND

CVE-2026-54341 HIGH
7.5 Jun 26

Remote denial of service in DragonflyDB before 1.39.0 lets an unauthenticated attacker crash the entire server with a si

CVE-2022-41967 HIGH
7.5 Dec 28

Dragonfly is a Java runtime dependency management library. Rated high severity (CVSS 7.5), this vulnerability is remotel

CVE-2025-26268 LOW POC
3.3 Apr 17

DragonflyDB Dragonfly before 1.27.0 allows authenticated users to cause a denial of service (daemon crash) via a crafted

CVE-2025-26269 LOW POC
3.3 Apr 17

DragonflyDB Dragonfly through 1.28.2 (fixed in 1.29.0) allows authenticated users to cause a denial of service (daemon c

CVE-2025-59410 MEDIUM
5.5 Sep 17

Dragonfly is an open source P2P-based file distribution and image acceleration system. Rated medium severity (CVSS 5.5),

CVE-2026-47206 LOW
2.3 Jun 26

RESP protocol injection in Dragonfly's EvalSerializer allows an authenticated low-privilege user to embed raw CRLF seque

Vendor StatusVendor

SUSE

Severity: Critical
Product Status
openSUSE Tumbleweed Fixed

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