CVE-2026-70665
- Source
- https://cve.org/CVERecord?id=CVE-2026-70665
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-70665.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-70665
- Aliases
-
- GHSA-8r7r-wh7x-27ff
- Downstream
- Published
- 2026-08-25T22:09:53.197Z
- Modified
- 2026-08-28T03:30:23.432688741Z
- Severity
-
- 4.2 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N CVSS Calculator
- Summary
- Doorkeeper OpenID Connect: DCR endpoint persists unvalidated client-supplied scopes
- Details
-
Doorkeeper OpenID Connect implements an OpenID Connect authentication provider for Rails applications on top of Doorkeeper. Prior to 1.10.4, the Dynamic Client Registration (DCR) endpoint persists client-supplied scopes without validating them against the server's configured scope set. Under certain conditions, this allows a self-registered client to obtain scopes beyond what the server intended to grant. In DynamicClientRegistrationController#applicationparams, the scopes attribute is assigned directly from params[:scope] with no validation against Doorkeeper.configuration.scopes or optionalscopes. Combined with enforceconfiguredscopes being off by default and Doorkeeper's ScopeChecker prioritizing application-level scopes over server-level scopes, this creates a privilege escalation path. This issue is fixed in version 1.10.4.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70665.json", "cwe_ids": [ "CWE-285" ], "cna_assigner": "GitHub_M" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70665.json
- https://github.com/doorkeeper-gem/doorkeeper-openid_connect/security/advisories/GHSA-8r7r-wh7x-27ff
- https://nvd.nist.gov/vuln/detail/CVE-2026-70665
- https://github.com/doorkeeper-gem/doorkeeper-openid_connect/commit/24c3cb1729b69f48649a6f4491dcae69f805000d
Affected packages
Git / github.com/doorkeeper-gem/doorkeeper-openid_connect
Affected ranges
- Type
- GIT
- Repo
- https://github.com/doorkeeper-gem/doorkeeper-openid_connect
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
- Database specific
-
Show details
{ "source": [ "AFFECTED_FIELD", "REFERENCES" ], "extracted_events": [ { "introduced": "0" }, { "fixed": "1.10.4" } ] }