# Pipecat: Remote Code Execution by Pickle Deserialization Through LivekitFrameSerializer

Advisory record · `GHSA-c2jg-5cp7-6wc7`

- **Identifiers:** `GHSA-c2jg-5cp7-6wc7` · `CVE-2025-62373` · `PYSEC-2026-458`
- **State:** Confirmed
- **Severity:** CVSS 9.8 Critical
- **Critical:** Yes: CVSS 9+
- **Weakness (CWE):** [CWE-502](https://cwe.mitre.org/data/definitions/502.html)
- **Tags:** [Insecure deserialization](https://agentprime.io/advisories/tag/deserialization.md)
- **Published:** 29 Jun 2026
- **Updated:** 1 Jul 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 29 Jun 2026, 11:50 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- CVSS score 9.8: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected packages

- `pipecat-ai` (PyPI): affected `>=0.0.41, <0.0.94`; fixed in `0.0.94`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Pipecat (pipecat-ai) versions 0.0.41 up to but not including 0.0.94 are affected. The LivekitFrameSerializer class passes data received from WebSocket clients directly to pickle.loads(), so an unauthenticated remote client that can reach a server using this serializer can send a crafted pickle payload and run arbitrary code with the service's privileges. Upgrade to pipecat-ai 0.0.94 or later. Avoid using LivekitFrameSerializer, which is deprecated and not enabled by default, and bind the server to 127.0.0.1 rather than 0.0.0.0 to limit exposure.

Written 10 Nov 2026.

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 9.8 Critical, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0070, the 53rd percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the GitHub Advisory Database, published 29 Jun 2026. New records show when each source confirmed them.

## Sources

- [GitHub Advisory Database: GHSA-c2jg-5cp7-6wc7](https://github.com/advisories/GHSA-c2jg-5cp7-6wc7)
- [OSV: GHSA-c2jg-5cp7-6wc7](https://osv.dev/vulnerability/GHSA-c2jg-5cp7-6wc7)
- <https://github.com/pipecat-ai/pipecat/security/advisories/GHSA-c2jg-5cp7-6wc7>
- <https://nvd.nist.gov/vuln/detail/CVE-2025-62373>
- <https://github.com/pipecat-ai/pipecat>
- <https://github.com/pipecat-ai/pipecat/releases/tag/v0.0.94>
- <https://pypi.org/project/pipecat-ai>
- <https://github.com/advisories/GHSA-c2jg-5cp7-6wc7>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-c2jg-5cp7-6wc7>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-c2jg-5cp7-6wc7/>. Everything for agents: <https://agentprime.io/llms.txt>.