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CVE-2026-55075
Published:July 07, 2026
Updated:July 21, 2026
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, two flaws in Coder's OIDC login chained into account takeover. Email-based user matching fell back to linking by email without checking for an existing link to a different IdP subject and the "email_verified" claim was only enforced when present as a boolean "false" so an absent or non-boolean claim was treated as verified. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 restricts the email fallback to first-time and legacy linking and defaults "email_verified" to false when the claim is absent or of an unexpected type. As a workaround, configure the OIDC provider to disallow self-registration or to require email verification before issuing tokens.
Affected Packages
https://github.com/coder/coder.git (GITHUB):
Affected version(s) >=v2.33.0 <v2.33.8
Fix Suggestion:
Update to version v2.33.8
https://github.com/coder/coder.git (GITHUB):
Affected version(s) >=v2.30.0 <v2.32.7
Fix Suggestion:
Update to version v2.32.7
https://github.com/coder/coder.git (GITHUB):
Affected version(s) >=v2.34.0 <v2.34.2
Fix Suggestion:
Update to version v2.34.2
github.com/coder/coder/v2 (GO):
Affected version(s) >=v2.33.0 <v2.33.8
Fix Suggestion:
Update to version v2.33.8
github.com/coder/coder/v2 (GO):
Affected version(s) >=v2.30.0 <v2.32.7
Fix Suggestion:
Update to version v2.32.7
github.com/coder/coder/v2 (GO):
Affected version(s) >=v2.34.0 <v2.34.2
Fix Suggestion:
Update to version v2.34.2
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CVSS v4
Base Score:
9.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.4
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Authentication Bypass by Alternate Name
Improper Authentication
EPSS
Base Score:
0.48