CVE-2026-55076
- Source
- https://cve.org/CVERecord?id=CVE-2026-55076
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55076.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-55076
- Aliases
- Published
- 2026-07-07T22:23:26.179Z
- Modified
- 2026-07-09T04:02:30.309612257Z
- Severity
-
- 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
- Summary
- Coder's OIDC email_verified type coercion bypass enables account takeover via unverified email linking
- Details
-
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_verifiedwith a direct Gobooltype 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 coercesemail_verifiedacross 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 returnsemail_verifiedas a native JSON boolean. The email-fallback linking issue has no configuration workaround; upgrading is required. - Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55076.json", "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-287", "CWE-704" ] }- References
-
- https://github.com/coder/coder/releases/tag/v2.29.17
- https://github.com/coder/coder/releases/tag/v2.32.7
- https://github.com/coder/coder/releases/tag/v2.33.8
- https://github.com/coder/coder/releases/tag/v2.34.2
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55076.json
- https://github.com/coder/coder/security/advisories/GHSA-75vm-6w67-gwvp
- https://nvd.nist.gov/vuln/detail/CVE-2026-55076
- https://github.com/coder/coder/pull/25712
- https://github.com/coder/coder/pull/25713
Affected packages
Git / github.com/coder/coder
Affected ranges
- Type
- GIT
- Repo
- https://github.com/coder/coder
- Events
-
IntroducedIntroducedIntroducedIntroduced0 Unknown introduced commit / All previous commits are affectedFixedFixedFixedFixed
- Database specific
{ "source": [ "AFFECTED_FIELD", "REFERENCES" ], "extracted_events": [ { "introduced": "2.34.0" }, { "fixed": "2.34.2" }, { "introduced": "2.33.0" }, { "fixed": "2.33.8" }, { "introduced": "2.30.0" }, { "fixed": "2.32.7" }, { "introduced": "0" }, { "fixed": "2.29.17" } ] }