@a11ign/screenreader-worker@0.4.0
Drives a real NVDA screen reader through real navigation on Windows and returns what it announced. The HTTP contract is the API.
AI Security Review
scanned 9d ago · by lpm-firewall-aiSource inspection confirms an automatic Windows startup path that attempts to disable Defender real-time monitoring, with an elevated scheduled-task mechanism available. This concrete security-control weakening supports blocking publication even though Windows Tamper Protection may prevent it from succeeding.
Static reason
One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; source fingerprint signature matched known malicious package; routed for review
Trigger
The worker command starts on Windows with trimming enabled and no completed trim marker.
Impact
If the setting succeeds, real-time malware protection is weakened.
Mechanism
The server launches the helper; the helper invokes PowerShell to turn off Defender real-time monitoring.
Attack narrative
Starting the worker on Windows automatically launches the trim helper by default. That helper attempts to disable Defender real-time monitoring and can arrange highest-level scheduled-task execution. This is a concrete security-control weakening; Tamper Protection may block the change.
AI rationale
Source inspection confirms an automatic Windows startup path that attempts to disable Defender real-time monitoring, with an elevated scheduled-task mechanism available. This concrete security-control weakening supports blocking publication even though Windows Tamper Protection may prevent it from succeeding.
Evidence
dist/server.mjsdist/windows-trim.mjs
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- package.json exposes dist/server.mjs as the worker command.
- Starting the server launches the Windows trim helper automatically unless trimming is skipped or its marker already exists.
- The helper can register and start a scheduled task at the highest run level.
- The helper calls PowerShell to disable Windows Defender real-time monitoring.
- The automated Defender change is an active security-control weakening unrelated to screen-reader capture.
Evidence against
- The Defender change is Windows-only, and Windows Tamper Protection may refuse it.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetworkWebSocket
HighEntropyStringsMinified
CopyleftLicense
Source & flagged code
6 flagged · loading sourcedist/windows-trim.mjsView file
1import { execFileSync } from "node:child_process";
L2: import { readFileSync, writeFileSync } from "node:fs";
High
Child Process
Package source references child process execution.
dist/windows-trim.mjsView on unpkg · L1dist/server.mjsView file
1Cross-file remote execution chain: dist/server.mjs spawns dist/src_capture-core_mjs.mjs; helper contains network access plus dynamic code execution.
L1: import { createServer } from "node:http";
L2: import { appendFileSync, existsSync, openSync, readFileSync, readdirSync, renameSync, statSync, statfsSync, writeFileSync } from "node:fs";
L3: import { execFile, execFileSync, spawn } from "node:child_process";
L4: import { promisify } from "node:util";
...
L7: import { join, resolve as external_node_path_resolve } from "node:path";
L8: import { inflateRawSync } from "node:zlib";
L9: import { rm } from "node:fs/promises";
...
L22: function powershellValue(script) {
L23: if ("win32" !== process.platform) return "unknown";
L24: try {
...
L47: try {
L48: const { stdout } = await execFileAsync("po
High
Cross File Remote Execution Context
Source spawns a local helper that also contains network and dynamic execution context; review data flow before blocking.
dist/server.mjsView on unpkg · L1Findings
6 High2 Medium4 Low
HighChild Processdist/windows-trim.mjs
HighCross File Remote Execution Contextdist/server.mjs
HighKnown Malware Source Similaritydist/server.mjs
HighKnown Malware Source Similaritydist/src_capture-core_mjs.mjs
HighKnown Malware Source Similaritydist/src_auth-flow_mjs.mjs
HighKnown Malware Source Fingerprint Signaturedist/server.mjs
MediumNetwork
MediumEnvironment Vars
LowScripts Present
LowFilesystem
LowHigh Entropy Strings
LowCopyleft License
Affected versions and remediation
This report applies to @a11ign/screenreader-worker@0.4.0.
See all versions of @a11ign/screenreader-worker for other recorded verdicts.
- Avoid installing @a11ign/screenreader-worker@0.4.0. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.
Evidence last updated: .
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