# Conductor vulnerable to OS command injection through unrestricted access to Java classes

Advisory record · `GHSA-8gqp-hr9g-pg62`

- **Identifiers:** `GHSA-8gqp-hr9g-pg62` · `CVE-2025-26074`
- **State:** Confirmed
- **Severity:** CVSS 9.8 Critical
- **Critical:** Yes: CVSS 9+
- **Weakness (CWE):** [CWE-78](https://cwe.mitre.org/data/definitions/78.html)
- **Tags:** [Command injection](https://agentprime.io/advisories/tag/command-injection.md)
- **Published:** 30 Jun 2025
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 30 Jun 2025, 18:31 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

- `org.conductoross:conductor-core` (Maven): affected `<3.21.13`; fixed in `3.21.13`

## Machine-written summary

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

> Conductor (Maven package org.conductoross:conductor-core) versions before 3.21.13 are vulnerable. A remote attacker can execute arbitrary OS commands through unrestricted access to Java classes. Upgrade to version 3.21.13.

Written 2 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 GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** 0.0071, the 54th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:17 UTC: First seen by agentprime
- 31 Oct 2026, 14:17 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-8gqp-hr9g-pg62)

## Sources

- [GitHub Advisory Database: GHSA-8gqp-hr9g-pg62](https://github.com/advisories/GHSA-8gqp-hr9g-pg62)
- [OSV: GHSA-8gqp-hr9g-pg62](https://osv.dev/vulnerability/GHSA-8gqp-hr9g-pg62)
- <https://nvd.nist.gov/vuln/detail/CVE-2025-26074>
- <https://github.com/conductor-oss/conductor/commit/e9816501df1e364a3d39d7fe37d6e167c40eaa1b>
- <https://github.com/conductor-oss/conductor>
- <https://github.com/conductor-oss/conductor/blob/main/core/src/main/java/com/netflix/conductor/core/events/ScriptEvaluator.java>
- <https://medium.com/@mrcnry/cve-2025-26074-remote-code-execution-in-conductor-oss-via-inline-javascript-injection-5ce3cb651cfb>

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-8gqp-hr9g-pg62>, 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-8gqp-hr9g-pg62/>. Everything for agents: <https://agentprime.io/llms.txt>.