CVE-2026-55176 Soft Machine - Broken Access Control

Soft Machine <= 0.2.247 contains a broken access control vulnerability caused by acceptance of a global shared secret as bearer token without workspace verification, letting tenants access and modify other tenants' workspace APIs, exploit requires access to user-facing process environment.

CVSS base score 9.0 /10
Critical
CISA KEV
Not listed
Public exploit
None known
EPSS
0.20% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Data Tampering, Information Disclosure
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Published
30 September 2026
Updated
15 October 2026
Weakness
CWE-863

Vendor fix

Update to the latest version once a patch is available or implement per-workspace token verification for shared-secret bearer path.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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