{"items":[{"id":"NVI-00010824","kind":"supply_chain_event","title":"Malicious code in css-reading-flow-polyfill (npm)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-h7h4-gh2m-xjmq"],"plain_summary":"GitHub lists this malware advisory for css-reading-flow-polyfill. 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-1d28b7f0cf0e1aae3f4eb7977a2b92e6"],"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-1d28b7f0cf0e1aae3f4eb7977a2b92e6","url":"https://github.com/advisories/GHSA-h7h4-gh2m-xjmq","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-h7h4-gh2m-xjmq","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:13:24.290Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1d28b7f0cf0e1aae3f4eb7977a2b92e6"],"technology":"css-reading-flow-polyfill","known_exclusions":[],"conditions_summary":"## Source: amazon-inspector (3b18e313d5fc67f07c1bcf051bd79a85dca97bb3c4510d9755efca6414bb55ff)\nThe package is published as css-reading-flow-polyfill but ships thunderboltRegistry.js, which impersonates internal Wix thunderbolt registry modules (thunderboltRegistry, siteAssetsRegistry, documentManagementRegistry, editorRegistry, corvidRegistry, and others) by exporting all of those names from a single payload file. On require, an IIFE in thunderboltRegistry.js uses child_process.execSync to run id, whoami, uname, ifconfig/ip-addr and read /etc/hosts, then fetches http://dxpoc.gt.tc/callback.php/bb8968d0f67000433bf7005dd5ad2d1f over plain HTTP with the command output, hostname, Node version, platform and pid appended as query parameters. The module also walks require.cache and deletes any entry whose key contains 'thunderboltRegistry' so the recon-and-exfil IIFE re-runs on every require rather than being cached. index.js is an empty decoy; the stated CSS polyfill purpose is a cover story and the package has no implementation of that functionality.\n\n---\n\nCredit: OpenSSF ([source](https://github.com/ossf/malicious-packages/blob/7a1f1382a846","public_affected_ranges":["= 1.0.0"]}],"null_published_at":"2026-10-31T23:18:22.398Z","source_updated_at":"2026-10-05T00:30:41.000Z","source_disclosed_at":"2026-10-05T00:30:39.000Z","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":"2026-10-31T23:13:24.290Z"}],"next_cursor":null,"snapshot_revision":"42594"}