by Kastro
Paper/Archive/CVE-2025-61584

CVE-2025-61584

serverless-dns serverless-dns — serverless-dns is vulnerable to Command Injection through pr.yml GitHub Action Workflow

EPSS 0.4%CVSS 9.3
critical.is priorityof 100
34
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 30.9.309 × 206.2No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
serverless-dns< 0.1.31–CNA

Scores by source

GitHub_M (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgithub.com/serverless-dns/serverless-dns/security/advisories/GHSA-9g7x-737f-5xpcrefgithub.com/serverless-dns/serverless-dns/commit/c5537dd7f203c59f2b86d1e295c2371f3533946a