CVE-2026-55076 – Coder’s OIDC email_verified type coercion bypass enables account takeover via unverified email linking

CVE ID :CVE-2026-55076

Published : July 7, 2026, 11:16 p.m. | 31 minutes ago

Description :Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, Coder’s OIDC callback checked `email_verified` with a direct Go `bool` type assertion. When an IdP returned the claim as a non-boolean (for example the string `”false”`) or omitted it, the assertion failed open and the email was treated as verified. Combined with an unconditional email-based account fallback, this enabled account takeover. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 coerces `email_verified` across bool, string and numeric types (fail-closed) and blocks the email fallback when the matched user already has a different linked IdP subject. As a workaround, ensure the IdP returns `email_verified` as a native JSON boolean. The email-fallback linking issue has no configuration workaround; upgrading is required.

Severity: 7.4 | HIGH

Visit the link for more details, such as CVSS details, affected products, timeline, and more…