@a11ign/screenreader-worker
Drives a real NVDA screen reader through real navigation on Windows and returns what it announced. The HTTP contract is the API.
This report shows the evidence for @a11ign/screenreader-worker@0.13.13. 23 of 27 known versions are blocked or flagged. See all versions.
AI Security Review
scanned 4d ago · by lpm-firewall-aiThe worker automatically attempts a security-protection change during startup without requiring a separate affirmative action for that change. This is concrete defense impairment and warrants blocking publication.
Static reason
One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; previous stored version diff introduced dangerous source
Trigger
Starting the worker server on Windows, unless the trim skip setting is enabled or a completion marker is present.
Impact
If the setting succeeds, the system has reduced real-time protection against threats.
Mechanism
The server spawns the trim helper, which invokes PowerShell to disable Defender real-time protection.
Attack narrative
Worker startup on Windows launches a helper that attempts to disable Defender real-time protection. The source confirms the automatic trigger and the setting change; it does not establish data theft or remote payload execution.
AI rationale
The worker automatically attempts a security-protection change during startup without requiring a separate affirmative action for that change. This is concrete defense impairment and warrants blocking publication.
Evidence
dist/server.mjsdist/windows-trim.mjs
Decision evidence
public snapshotAI called this Malicious at 91.0% confidence as Malware with low false-positive risk.
Evidence for block
- The published command points to the server entrypoint.
- When the worker server starts, it calls the Windows trim routine.
- On Windows, unless the skip setting is enabled or a completion marker exists, the server spawns the trim helper.
- The helper calls the Defender routine after applying its trim operations.
- The Defender routine asks PowerShell to turn off real-time protection.
Evidence against
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_ts.mjs; helper contains network access plus dynamic code execution.
L1: import { createServer } from "node:http";
L2: import { appendFileSync, existsSync, openSync, readFileSync, readdirSync, realpathSync, renameSync, statSync, statfsSync, writeFileSync } from "node:fs";
L3: import { execFile, execFileSync, spawn } from "node:child_process";
L4: import { promisify } from "node:util";
...
L8: import { extname, join, resolve as external_node_path_resolve } from "node:path";
L9: import { inflateRawSync } from "node:zlib";
L10: import { randomUUID } from "node:crypto";
...
L22: function powershellValue(script) {
L23: if ("win32" !== process.platform) return "unknown";
L24: try {
...
L47: try {
L48: const { stdout }
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.mjsFindings
1 Critical4 High4 Medium4 Low
CriticalPrevious Version Dangerous Deltadist/src_capture-core_ts.mjs
HighChild Processdist/windows-trim.mjs
HighCross File Remote Execution Contextdist/server.mjs
HighKnown Malware Source Similaritydist/server.mjs
HighKnown Malware Source Similaritydist/src_auth-flow_ts.mjs
MediumNetwork
MediumEnvironment Vars
MediumShips Build Helperlauncher/apply-foreground-lock-timeout.ps1
MediumStructural Risk Force Deep Review
LowScripts Present
LowFilesystem
LowHigh Entropy Strings
LowCopyleft License
Affected versions and remediation
This report applies to @a11ign/screenreader-worker@0.13.13.
The versions list below shows the verdict for each recorded version.
- Avoid installing @a11ign/screenreader-worker@0.13.13. 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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