@a11ign/screenreader-worker@0.6.0
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 14d ago · by lpm-firewall-aiThe active Windows startup path launches a helper that makes broad system changes, including attempting to disable Defender. This concrete security-impacting behavior supports blocking the package.
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
Running the package's server command on Windows, unless the trim skip flag or completion marker applies.
Impact
Reduced endpoint protection and altered Windows services and installed app availability.
Mechanism
The server starts a detached helper; when elevated, the helper removes selected provisioned apps, disables selected services, and runs a PowerShell command to turn off Defender real-time monitoring.
Attack narrative
The exposed server command triggers a detached Windows helper at startup. The helper can remove provisioned apps, disable services, and attempt to turn off Defender real-time protection. These changes are unrelated to screen-reader capture and reduce system security.
AI rationale
The active Windows startup path launches a helper that makes broad system changes, including attempting to disable Defender. This concrete security-impacting behavior supports blocking the package.
Evidence
dist/server.mjsdist/windows-trim.mjs.windows-trimmed.windows-trimmed.log.windows-trimmed.json
Decision evidence
public snapshotAI called this Malicious at 98.0% confidence as Malware with low false-positive risk.
Evidence for block
- The package exposes dist/server.mjs as its command-line executable.
- On Windows, starting the server launches a detached trim helper unless an environment flag or marker suppresses it.
- The helper removes provisioned apps and disables selected Windows services.
- The helper attempts to disable Microsoft Defender real-time monitoring.
Evidence against
- The trim behavior is Windows-only and can be skipped with A11Y_SKIP_TRIM=1.
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@0.6.0.
See all versions of @a11ign/screenreader-worker for other recorded verdicts.
- Avoid installing @a11ign/screenreader-worker@0.6.0. 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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