CVE-2025-59351: Github.com/dragonflyoss/dragonfly DragonFly Vulnerable To Panics Due Vulnerability
MODERATECVE-2025-59351 is a MODERATE dragonfly vulnerable to panics due vulnerability (CWE-476: NULL Pointer Dereference) affecting Github.com/dragonflyoss/dragonfly libraries in the Go ecosystem. The issue involves dragonfly vulnerable to panics due to nil pointer dereference when using variables created alongside an error. Remediation is available by upgrading affected packages to version 2.1.0.
CVE-2025-59351 at a Glance
How to Fix CVE-2025-59351
To remediate this vulnerability, upgrade all affected Github.com/dragonflyoss/dragonfly dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade github.com/dragonflyoss/dragonfly to 2.1.0Upgrade d7y.io/dragonfly/v2 to 2.1.0Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for github.com/dragonflyoss/dragonflyHow to Check if You Are Affected
To determine whether your application is affected by CVE-2025-59351, inspect your project dependencies for Github.com/dragonflyoss/dragonfly:
inspect dependencies for github.com/dragonflyoss/dragonflyAnalyze the terminal output to locate any version of Github.com/dragonflyoss/dragonfly in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.1.0), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-476: NULL Pointer Dereference, where the product dereferences a pointer that it expects to be valid but is null. In Github.com/dragonflyoss/dragonfly, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2025-59351 Affected Github.com/dragonflyoss/dragonfly Versions
2 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/dragonflyoss/dragonfly
|
Go |
< 2.1.0
|
2.1.0
|
|
d7y.io/dragonfly/v2
|
Go |
< 2.1.0
|
2.1.0
|
References
Frequently Asked Questions
What is CVE-2025-59351?
Which Github.com/dragonflyoss/dragonfly versions are affected?
What version fixes CVE-2025-59351?
Is github.com/dragonflyoss/dragonfly affected?
Is d7y.io/dragonfly/v2 affected?
What CWE is associated with CVE-2025-59351?
How can I check Go dependencies for CVE-2025-59351?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-4mhv-8rh3-4ghw",
"modified" : "2025-09-26T16:18:25Z",
"published" : "2025-09-17T20:10:53Z",
"aliases" : [ "CVE-2025-59351" ],
"summary" : "DragonFly vulnerable to panics due to nil pointer dereference when using variables created alongside an error",
"details" : "### Impact\nWe found two instances in the DragonFly codebase where the first return value of a function is dereferenced even when the function returns an error (figures 9.1 and 9.2). This can result in a nil dereference, and cause code to panic. The codebase may contain additional instances of the bug.\n\n```golang\nrequest, err := source.NewRequestWithContext(ctx, parentReq.Url,\nparentReq.UrlMeta.Header)\nif err != nil {\n log.Errorf(\"generate url [%v] request error: %v\", request.URL, err)\n span.RecordError(err)\n return err\n}\n```\n\nEve is a malicious actor operating a peer machine. She sends a dfdaemonv1.DownRequest request to her peer Alice. Alice’s machine receives the request, resolves a nil variable in the server.Download method, and panics.\n\n### Patches\n\n- Dragonfy v2.1.0 and above.\n\n### Workarounds\n\nThere are no effective workarounds, beyond upgrading.\n\n### References\n\nA third party security audit was performed by Trail of Bits, you can see the [full report](https://github.com/dragonflyoss/dragonfly/blob/main/docs/security/dragonfly-comprehensive-report-2023.pdf).\n\nIf you have any questions or comments about this advisory, please email us at [dragonfly-maintainers@googlegroups.com](mailto:dragonfly-maintainers@googlegroups.com).",
"severity" : [ {
"type" : "CVSS_V4",
"score" : "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"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/dragonflyoss/dragonfly"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "2.1.0"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "d7y.io/dragonfly/v2"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "2.1.0"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/dragonflyoss/dragonfly/security/advisories/GHSA-4mhv-8rh3-4ghw"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-59351"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/dragonflyoss/dragonfly"
}, {
"type" : "WEB",
"url" : "https://github.com/dragonflyoss/dragonfly/blob/main/docs/security/dragonfly-comprehensive-report-2023.pdf"
}, {
"type" : "WEB",
"url" : "https://pkg.go.dev/vuln/GO-2025-3970"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-476" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2025-09-17T20:10:53Z",
"nvd_published_at" : "2025-09-17T20:15:37Z"
}
}