{"items":[{"id":"NVI-00011025","kind":"supply_chain_event","title":"Malicious code in css-nrmgzn-polyfill (npm)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-6qc5-m3jm-2rg5"],"plain_summary":"GitHub lists this malware advisory for css-nrmgzn-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-9543390954cb47905dddec34a36f2199"],"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-9543390954cb47905dddec34a36f2199","url":"https://github.com/advisories/GHSA-6qc5-m3jm-2rg5","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-6qc5-m3jm-2rg5","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:13:05.881Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-9543390954cb47905dddec34a36f2199"],"technology":"css-nrmgzn-polyfill","known_exclusions":[],"conditions_summary":"## Source: amazon-inspector (4522148c469356aa7799c831ce547d2ae612ac40621e5110ad5d5125bf2f2684)\nThe package presents itself as a CSS polyfill but on require() of thunderboltRegistry.js runs an IIFE that invokes child_process.execSync for id, whoami, uname, ifconfig, and cat /etc/hosts, and sends the command output together with os.hostname(), node version, platform and pid to a hardcoded Burp Collaborator subdomain at https://unl9pgk6ei4uf80n5tf4iktspjvbuzkn9.oastify.com/. The package also exports modules named after internal Wix thunderbolt registries (thunderboltRegistry, siteAssetsRegistry, editorRegistry, corvidRegistry, documentManagementRegistry) and ships a manifest referencing static.parastorage.com paths for css-nrmgzn-polyfill, consistent with a dependency-confusion lure positioned to resolve in place of a private internal module in a Wix build or CI environment. Loading the package yields host reconnaissance exfiltration to an attacker-controlled OAST domain, with no polyfill functionality actually implemented.\n\n---\n\nCredit: OpenSSF ([source](https://github.com/ossf/malicious-packages/blob/a00eadccb320bc1163c7d818541ccc8206217","public_affected_ranges":["= 1.0.0"]}],"null_published_at":"2026-10-31T23:18:22.425Z","source_updated_at":"2026-10-05T18:34:14.000Z","source_disclosed_at":"2026-10-05T18:34:13.000Z","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":"2026-10-31T23:13:05.881Z"}],"next_cursor":null,"snapshot_revision":"42594"}