# Deserialization of untrusted data in synthcity

Advisory record · `GHSA-4957-7vhp-7v59`

- **Identifiers:** `GHSA-4957-7vhp-7v59` · `CVE-2024-0937` · `PYSEC-2026-547`
- **State:** Confirmed
- **Severity:** CVSS 6.3 Medium
- **Critical:** No
- **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.

## Affected packages

- `synthcity` (PyPI): affected `<=0.2.9`; no fixed version yet

## Machine-written summary

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

> Deserialization of untrusted data in synthcity versions up to and including 0.2.9 affects the load_from_file function of its PKL file handler. The source describes a remote attack in which a crafted file is deserialized, but gives few details on the required access or the resulting impact. No fixed version is listed; the source says a patch was planned for February 2024.

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

- 6.3 Medium, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L`, from CNA (VulDB)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0068, the 53rd percentile, on 11 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-4957-7vhp-7v59](https://github.com/advisories/GHSA-4957-7vhp-7v59)
- [OSV: GHSA-4957-7vhp-7v59](https://osv.dev/vulnerability/GHSA-4957-7vhp-7v59)
- <https://nvd.nist.gov/vuln/detail/CVE-2024-0937>
- <https://github.com/bayuncao/vul-cve-6>
- <https://github.com/vanderschaarlab/synthcity>
- <https://github.com/vanderschaarlab/synthcity/blob/73cfd8ca784f70141fc7f2969221cd3b5737f7b1/src/synthcity/utils/serialization.py#L30>
- <https://vuldb.com/?ctiid.252182>
- <https://vuldb.com/?id.252182>
- <https://pypi.org/project/synthcity>
- <https://github.com/advisories/GHSA-4957-7vhp-7v59>

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-4957-7vhp-7v59>, 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-4957-7vhp-7v59/>. Everything for agents: <https://agentprime.io/llms.txt>.