CVE-2026-55075

Coder vulnerable to OIDC account takeover via email-based user matching and email_verified bypass

HIGH
7.4
CVSS Score
Published: July 7, 2026 at 09:33 PM UTC
Updated: July 8, 2026 at 08:05 PM UTC
1 product affected across 1 vendorCoder

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Severity
HIGH7.4
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

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, 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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.29.17v < 2.32.7v < 2.33.8v < 2.34.22.30.0 ≤ v < 2.32.72.33.0 ≤ v < 2.33.82.34.0 ≤ v < 2.34.2
Affected range stops below 2.29.17, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.32.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.33.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.34.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (7)

x_refsource_CONFIRMPatchVendor Advisory
Source: cverecord
https://github.com/coder/coder/security/advisories/GHSA-9r87-mvcw-x35f
x_refsource_MISCIssue TrackingPatch
Source: cverecord
https://github.com/coder/coder/pull/25712
x_refsource_MISCIssue TrackingPatch
Source: cverecord
https://github.com/coder/coder/pull/25713
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/coder/coder/releases/tag/v2.29.17
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/coder/coder/releases/tag/v2.32.7
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/coder/coder/releases/tag/v2.33.8
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/coder/coder/releases/tag/v2.34.2

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.4HIGHGitHub_M
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-287CWE-289

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