{"answers":{"affected":"1 open source package ship an affected version, including new-ecro-helper.","exploited":"There is no known exploitation of MAL-2026-6283 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-2026-6283 is a malicious package in new-ecro-helper, published on 23 Jun 2026."},"fix_prompt":"MAL-2026-6283 is a malicious package: new-ecro-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-2026-6283/ (Markdown: https://insights.sbomify.com/MAL-2026-6283/index.md)","id":"MAL-2026-6283","markdown":"https://insights.sbomify.com/MAL-2026-6283/index.md","name":"MAL-2026-6283","record":{"aliases":["GHSA-85xv-pw78-4hqp"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"The package publishes verbatim big.js v7.0.1 source (including the upstream copyright header, README, repository URL pointing to MikeMcl/big.js, and the upstream author's email) under the unrelated name `new-ecro-helper`. The main entry (big.js / big.mjs) has an injected loader block that runs on every `require('new-ecro-helper')`: `try { const doc = require(\"new-helper\"); doc.from_str().then(...).catch(...) } catch (error) { }`. The dependency `new-helper` is declared as `^5.8.1` in package.json, so the semver caret admits any current or future 5.x.y version of that sibling package as the actual delivered payload. All errors from both the require and the invocation are swallowed by empty catch handlers, hiding the activity from the consuming application. The big.js code itself is unmodified and serves only as a cover library to disguise the loader. The net effect on installers: `npm install new-ecro-helper` pulls `new-helper` into the dependency tree, and any consumer that requires the package immediately and silently executes code in that sibling package.\n\nAny computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.","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 new-ecro-helper (npm)","id":"MAL-2026-6283","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":["0"],"last_affected":[],"package":"new-ecro-helper","purl":"pkg:npm/new-ecro-helper","source":"MAL-2026-6283"}],"products":null,"published":"2026-06-23","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-2026-6283/"}