CVSS 3.1
7.4 highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:NCVE-2026-55076
High (7.4) in coder coder. EPSS 0.6% chance of exploitation in the next 30 days. Fixed in github.com/coder/coder/v2 2.29.17, 2.32.7, 2.33.8.
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
- EPSS
- 0.6% chance of exploitation in the next 30 days; higher than 49% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-287, CWE-704
- Published
- Modified
- Record from
- the NVD, synced
Affected
- coder:coder
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-75vm-6w67-gwvp | Go | github.com/coder/coder/v2 | >=2.34.0 <2.34.2 | 2.34.2 |
| GHSA-75vm-6w67-gwvp | Go | github.com/coder/coder/v2 | >=2.33.0 <2.33.8 | 2.33.8 |
| GHSA-75vm-6w67-gwvp | Go | github.com/coder/coder/v2 | >=2.30.0 <2.32.7 | 2.32.7 |
| GHSA-75vm-6w67-gwvp | Go | github.com/coder/coder/v2 | <2.29.17 | 2.29.17 |
| GO-2026-5907 | Go | github.com/coder/coder | all versions | no fix published |
| GO-2026-5907 | Go | github.com/coder/coder/v2 | <2.29.17 >=2.30.0 <2.32.7 >=2.33.0 <2.33.8 >=2.34.0 <2.34.2 | 2.29.17, 2.32.7, 2.33.8, 2.34.2 |