CVE-2025-59351 Dragonfly possibly panics due to nil pointer dereference when using variables created alongside an error

What is CVE-2025-59351?

CVE-2025-59351 is a low-severity vulnerability in dragonflyoss dragonfly, published on 17 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Dragonfly is an open source P2P-based file distribution and image acceleration system. Prior to 2.1.0, the first return value of a function is dereferenced even when the function returns an error. This can result in a nil dereference, and cause code to panic. This vulnerability is fixed in 2.1.0.

Weakness: CWE-476

Which versions are affected by CVE-2025-59351?

6 open source packages ship an affected version, including github.com/dragonflyoss/dragonfly and d7y.io/dragonfly/v2. It affects 1 product.

Products include Linuxfoundation Dragonfly.

How do I fix CVE-2025-59351?

Upgrade github.com/dragonflyoss/dragonfly to 2.1.0 or later.

Is CVE-2025-59351 being exploited?

There is no known exploitation of CVE-2025-59351 in the wild and no public exploit code.

Other vulnerabilities in dragonflyoss dragonfly

• CVE-2023-27584 Dragonfly2 vulnerable to hard coded cyptographic key Critical 9.8
• CVE-2026-24124 Dragonfly Manager Job API Allows Unauthenticated Access High 8.9
• CVE-2025-59345 Dragonfly did not enable authentication for some Manager’s endpoints High 7.7
• CVE-2025-59353 Manager generates mTLS certificates for arbitrary IP addresses High 7.7
• CVE-2025-59352 Dragonfly allows arbitrary file read and write on a peer machine Medium 6.9

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-4mhv-8rh3-4ghw, GO-2025-3970.