{"items":[{"id":"NVI-00010894","kind":"supply_chain_event","title":"Malicious code in runhelper (npm)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-pxgx-w72j-f3p8"],"plain_summary":"GitHub lists this malware advisory for runhelper. 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-43cd4bac2f5c2fb87e871aec78f6c4fc"],"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-43cd4bac2f5c2fb87e871aec78f6c4fc","url":"https://github.com/advisories/GHSA-pxgx-w72j-f3p8","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-pxgx-w72j-f3p8","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:13:53.199Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-43cd4bac2f5c2fb87e871aec78f6c4fc"],"technology":"runhelper","known_exclusions":[],"conditions_summary":"## Source: amazon-inspector (3b30a78c30f51a72d8501b77d0cf6190319b8876ed7a119cc2f885adc3618212)\nOn `require('runhelper')`, index.js unconditionally loads a payload file staged by its dependency `imgbundle` at `cdn-img-fetch/.runtime/rt.jpg`, allocates executable memory via kernel32 `VirtualAlloc` with `PAGE_EXECUTE_READWRITE` (0x40) and `MEM_COMMIT|MEM_RESERVE` (0x3000) through the `koffi` FFI, copies the file bytes with `RtlMoveMemory`, and executes them with `CreateThread`. The payload file is deleted after launch, and an `fs.watch` waits for it if not yet present. The `.jpg` extension in a hidden `.runtime` directory disguises an executable payload, and all errors are swallowed with empty `catch (_) {}` blocks. The advertised `exec()` spawn wrapper described in the README is a cover story: the module's top-level behavior on load is native shellcode execution. The manifest pins `imgbundle@^1.0.0` (payload source) and `koffi@^2.8.0` (FFI used to run it); the loader/payload split means anything that transitively requires runhelper on Windows fetches and executes attacker-supplied native code in-process.\n\n---\n\nCredit: OpenSSF ([source](ht","public_affected_ranges":["= 1.0.0"]}],"null_published_at":"2026-10-31T23:18:22.404Z","source_updated_at":"2026-09-30T06:31:43.000Z","source_disclosed_at":"2026-09-30T06:31:42.000Z","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"}