# Dynamic Linq vulnerable to remote code execution

Advisory record · `GHSA-w65q-jcmv-28gj`

- **Identifiers:** `GHSA-w65q-jcmv-28gj` · `CVE-2023-32571`
- **State:** Confirmed
- **Severity:** CVSS 9.8 Critical
- **Critical:** Yes: CVSS 9+, CVSS 7+ and EPSS
- **Weakness (CWE):** [CWE-697](https://cwe.mitre.org/data/definitions/697.html)
- **Tags:** [CWE-697](https://agentprime.io/advisories/tag/cwe-697.md)
- **Published:** 22 Jun 2023
- **Updated:** 21 Feb 2024
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 22 Jun 2023, 21:30 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.
- CVSS score 9.8 (7.0 or more) and EPSS 0.35 (0.1 or more): a high score and a real chance of exploitation in the next 30 days.

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

## Affected packages

- `System.Linq.Dynamic.Core` (NuGet): affected `>=1.0.7.10, <1.3.0`; fixed in `1.3.0`

## 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 GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** 0.35, the 98th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 15:24 UTC: First seen by agentprime
- 31 Oct 2026, 15:24 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-w65q-jcmv-28gj)

## Sources

- [GitHub Advisory Database: GHSA-w65q-jcmv-28gj](https://github.com/advisories/GHSA-w65q-jcmv-28gj)
- [OSV: GHSA-w65q-jcmv-28gj](https://osv.dev/vulnerability/GHSA-w65q-jcmv-28gj)
- <https://nvd.nist.gov/vuln/detail/CVE-2023-32571>
- <https://github.com/zzzprojects/System.Linq.Dynamic.Core>
- <https://research.nccgroup.com/2023/06/13/dynamic-linq-injection-remote-code-execution-vulnerability-cve-2023-32571>

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-w65q-jcmv-28gj>, 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-w65q-jcmv-28gj/>. Everything for agents: <https://agentprime.io/llms.txt>.