{"items":[{"id":"NVI-00010937","kind":"supply_chain_event","title":"Malicious code in web-vitals-polyfill-core-v1 (npm)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-fx3x-h4mr-m28v"],"plain_summary":"GitHub lists this malware advisory for web-vitals-polyfill-core-v1. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-614d8335da2fb4a26d94cc8245e38a96"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-614d8335da2fb4a26d94cc8245e38a96","url":"https://github.com/advisories/GHSA-fx3x-h4mr-m28v","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-fx3x-h4mr-m28v","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:13:53.199Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-614d8335da2fb4a26d94cc8245e38a96"],"technology":"web-vitals-polyfill-core-v1","known_exclusions":[],"conditions_summary":"## Source: amazon-inspector (38311c0f483e9485a7b5e8aa7f9a093a40203d8e1a025c0bf5850c2874cffdfa)\nThe package name mimics the widely-used web-vitals polyfill but the tarball ships disk/index.min.js, a base64-wrapped service-worker payload (self.__PWA_ROUTER__.executeTacticalRouting) that resolves an active destination via DoH TXT lookups of api.chinazhangsan.ccwu.cc (queried through doh.pub and dns.alidns.com) with base64-encoded fallback endpoints on gist.githubusercontent.com/chinazhangsan999-crypto and api.npoint.io, performs decoy fetches, and issues Response.redirect(targetUrl, 302) to the resolved host. package.json declares main: index.js which is not present in the tarball, so the package has no legitimate library surface; its shipped code is exclusively the obfuscated redirector, intended to be loaded into a consuming site's service worker where it can hijack end-user navigation to attacker-chosen destinations resolved at runtime through multi-provider DNS-over-HTTPS and paste-site fallbacks.\n\n---\n\nCredit: OpenSSF ([source](https://github.com/ossf/malicious-packages/blob/d7d3c91983ca43b861eb619ab6d817344dac390b/osv/malicious/npm/w","public_affected_ranges":["= 1.0.0"]}],"null_published_at":"2026-10-31T23:18:22.409Z","source_updated_at":"2026-09-30T03:31:52.000Z","source_disclosed_at":"2026-09-30T03:31:46.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-10-31T23:13:53.199Z"}],"next_cursor":null,"snapshot_revision":"42594"}