---
title: "CVE-2026-42076: Evolver: Command Injection via `execSync` in `_extractLLM()` function allows Remote Code Execution"
url: https://erroneo.us/security/cve/CVE-2026-42076/
description: "CVE-2026-42076 (@evomap/evolver (npm)): Evolver is a GEP-powered self-evolving engine for AI agents. Prior to version 1.69.3, a command injection…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-05-04
date_modified: 2026-05-05
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-42076"
kev: false
cvss: 9.8
epss: 0.02563
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-42076: Evolver: Command Injection via `execSync` in `_extractLLM()` function allows Remote Code Execution

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 2.6% , percentile 85: FIRST’s model estimates a 2.6% chance of exploitation activity in the next 30 days, higher than 85% of all scored CVEs (elevated). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes @evomap/evolver (npm) < 1.69.3, fixed in 1.69.3 . Check your lockfile, including transitive dependencies.

## What it is

Evolver is a GEP-powered self-evolving engine for AI agents. Prior to version 1.69.3, a command injection vulnerability in the extractLLM() function allows attackers to execute arbitrary shell commands on the server. The function constructs a curl command using string concatenation and passes it to execSync() without proper sanitization, enabling remote code execution when the corpus parameter contains shell metacharacters. This issue has been patched in version 1.69.3.

## Affected packages

- npm `@evomap/evolver` < 1.69.3 → fixed: 1.69.3

## Affected products (CVE record)

- EvoMap evolver: < 1.69.3

## Severity

- GitHub_M CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
- GitHub CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 2.56% probability of exploitation activity in the next 30 days; percentile 85.

## Sources

- [GitHub Advisory GHSA-j5w5-568x-rq53](https://github.com/advisories/GHSA-j5w5-568x-rq53)
- [CVE.org record CVE-2026-42076](https://www.cve.org/CVERecord?id=CVE-2026-42076)
- [NVD entry CVE-2026-42076](https://nvd.nist.gov/vuln/detail/CVE-2026-42076)
- [github.com](https://github.com/EvoMap/evolver/security/advisories/GHSA-j5w5-568x-rq53)
- [github.com](https://github.com/EvoMap/evolver/releases/tag/v1.69.3)

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Source page: https://erroneo.us/security/cve/CVE-2026-42076/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt