CVE-2026-111928: Coder 2.0.0 before 2.34.8 Authorization Bypass via User-Level ACL in RBAC Policy

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-17 · updated 2026-10-19
Weakness: CWE-863

Description

Coder from 2.0.0 before 2.34.8 contains an incorrect authorization vulnerability in the acl_allow rule of coderd/rbac/policy.rego, which does not verify organization membership for per-user ACL entries, and organization member removal does not scrub those entries. Authenticated users removed from an organization can keep accessing previously granted org-scoped resources such as templates and workspaces via the API.

Affected products

coder: from 2.0.0 before 2.34.8 — fixed in 2.34.8

How to fix

Upgrade to a fixed version: coder 2.34.8. Check the vendor advisory for mitigations.

References

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