CVE-2025-61584 serverless-dns is vulnerable to Command Injection through pr.yml GitHub Action Workflow
Attackers can inject commands via GitHub Actions to push malicious code, leading to remote code execution for users of the DNS resolver.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-61584?
CVE-2025-61584 is a critical command injection vulnerability in serverless-dns, published on 30 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
serverless-dns is a RethinkDNS resolver that deploys to Cloudflare Workers, Deno Deploy, Fastly, and Fly.io. Versions through abd including 0.1.30 have a vulnerability where the pr.yml GitHub Action interpolates in an unsafe manner untrusted input, specifically the github.event.pull_request.head.repo.clone_url and github.head_ref, to a command in the runner. Due to the action using the pull_request_target trigger it has permissive permissions by default. An unauthorized attacker can exploit this vulnerability to push arbitrary data to the repository. The subsequent impact on the end-user is executing the attackers' code when running serverless-dns. This is fixed in commit c5537dd, and expected to be released in 0.1.31.
Weakness: CWE-77
Which versions are affected by CVE-2025-61584?
How do I fix CVE-2025-61584?
No fix has been published for CVE-2025-61584 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2025-61584 being exploited?
There is no known exploitation of CVE-2025-61584 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-9g7x-737f-5xpc.