CVE-2026-46711

8.3 HIGH 0.3% exploit odds Fix listed Auth & access Server

What it is

Soft Machine is a Virtual Machine–based agentic development environment / Cloud OS. In versions 0.2.247 and prior, the workspace HTTP service that listens on 0.0.0.0:8080 inside each sm-ws-* Fly Machine exposes endpoints (/health, /file/<path>, /archive/<dir>) without any authentication or origin check. Any host that can reach TCP/8080 on a workspace can read arbitrary files under that workspace's /workspace root and download whole project trees as tar archives. Because every workspace shares the same Fly private 6PN and resolves all peer addresses via the unauthenticated _instances.internal TXT record, every other sm-ws-* machine on the same Fly app/org is a reachable, unauthenticated attacker — the trust boundary (workspace owner ↔ everyone-else) is missing. At time of publication, there are no publicly known patches.

At a glance

Exploitability: Can be exploited from the same network segment with an admin-level account. High risk of data exposure, data tampering.
Exploit odds: 0.3% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2026-05-15 23:26 UTC ReservedThe CVE id was reserved by its CNA
2026-09-30 17:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-09-30 19:57 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.3% in the next 30 days (EPSS).
Severity: 8.3 HIGH (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2026-09-30 17:16 UTC
Last modified: 2026-09-30 19:57 UTC
Exploit probability: 0.3% · EPSS, next 30 days
Weakness: CWE-306 · Missing authentication
Record status: Deferred

Attack profile CVSS 3.1 · 8.3

Attack vector: Adjacent network
Complexity: Low
Privileges needed: High
User interaction: None
Scope: Changed
Confidentiality: High
Integrity: High
Availability: Low

Raw vector

CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:L

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2026-46711.md and follow it. Check whether this project is affected by CVE-2026-46711. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record