Mend.io Vulnerability Database
The largest open source vulnerability database
What is a Vulnerability ID?
New vulnerability? Tell us about it!
CVE-2026-55076
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, 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.
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) >=v2.34.0 <v2.34.2
Fix Suggestion:
Update to version v2.34.2
https://github.com/coder/coder.git (GITHUB):
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) >=v2.30.0 <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
github.com/coder/coder/v2 (GO):
Affected version(s) >=v2.33.0 <v2.33.8
Fix Suggestion:
Update to version v2.33.8
Do you need more information?
Contact Us
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)
Improper Authentication
Incorrect Type Conversion or Cast
EPSS
Base Score:
0.48