{"answers":{"affected":"1 open source package ship an affected version, including num-format-helper.","exploited":"There is no known exploitation of MAL-2026-11107 in the wild and no public exploit code.","fix":"Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.","what":"MAL-2026-11107 is a malicious package in num-format-helper, published on 28 Jul 2026."},"fix_prompt":"MAL-2026-11107 is a malicious package: num-format-helper (npm). Every version was published to cause harm.\n\nTask:\n1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.\n2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.\n3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.\n4. If the package is not used anywhere, say so and change nothing.\n\nReference: https://insights.sbomify.com/MAL-2026-11107/ (Markdown: https://insights.sbomify.com/MAL-2026-11107/index.md)","id":"MAL-2026-11107","markdown":"https://insights.sbomify.com/MAL-2026-11107/index.md","name":"MAL-2026-11107","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"Package advertises itself as a number/locale formatting helper but its postinstall.js runs automatically on npm install and shells out via child_process/exec to collect host identity (hostname, user, id, sudo, uname), GitHub Actions variables including GITHUB_TOKEN and GITHUB_REPOSITORY, a broad env dump filtered by a credential regex (KEY|TOKEN|SECRET|CREDENTIAL|KUBE|JENKINS|NPM|GEM|CARGO|AZURE|GCP|AWS_|GH_TOKEN|GITHUB_TOKEN), network interfaces, running processes, and cloud instance metadata (AWS 169.254.169.254, Aliyun 100.100.100.200, Tencent). The collected data is base64-encoded and sent via curl in a GET request to the hardcoded Burp Collaborator subdomain pzs5w7ntzhsnepwk564lyfdci3oucl0a.oastify.com. The shipped index.js is a trivial unrelated stub, confirming the package is a cover story for the install-time exfiltration payload.\n\nThe OpenSSF Package Analysis project identified 'num-format-helper' @ 1.0.0 (npm) as malicious.\n\nIt is considered malicious because:\n\n- The package communicates with a domain associated with malicious activity.\n\n- The package executes one or more commands associated with malicious behavior.","ecosystems":["npm"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":false,"headline":"Malicious code in num-format-helper (npm)","id":"MAL-2026-11107","indexable":true,"kev":null,"kind":"malicious","links":{"ecosystem":"npm","product":null,"products":[],"type":null,"year":"2026"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"npm","fixed":[],"introduced":[],"last_affected":[],"package":"num-format-helper","purl":"pkg:npm/num-format-helper","source":"MAL-2026-11107"}],"products":null,"published":"2026-07-28","related":[],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"OpenSSF Malicious Packages","prefix":"MAL"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":null,"url":"https://insights.sbomify.com/MAL-2026-11107/"}