{"cve":"CVE-2020-26254","nvd":{"published":"2020-12-08T15:15:11.130","modified":"2026-06-17T03:07:55.790","status":"Modified","description":"omniauth-apple is the OmniAuth strategy for \"Sign In with Apple\" (RubyGem omniauth-apple). In omniauth-apple before version 1.0.1 attackers can fake their email address during authentication. This vulnerability impacts applications using the omniauth-apple strategy of OmniAuth and using the info.email field of OmniAuth's Auth Hash Schema for any kind of identification. The value of this field may be set to any value of the attacker's choice including email addresses of other users. Applications not using info.email for identification but are instead using the uid field are not impacted in the same manner. Note, these applications may still be negatively affected if the value of info.email is being used for other purposes. Applications using affected versions of omniauth-apple are advised to upgrade to omniauth-apple version 1.0.1 or later.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N","score":7.7},"cwes":["CWE-290"],"references":["https://github.com/nhosoya/omniauth-apple/blob/master/CHANGELOG.md#101---2020-12-03","https://github.com/nhosoya/omniauth-apple/commit/b37d5409213adae2ca06a67fec14c8d3d07d9016","https://github.com/nhosoya/omniauth-apple/security/advisories/GHSA-49r3-2549-3633","https://github.com/nhosoya/omniauth-apple/blob/master/CHANGELOG.md#101---2020-12-03","https://github.com/nhosoya/omniauth-apple/commit/b37d5409213adae2ca06a67fec14c8d3d07d9016"],"products":["omniauth-apple_project:omniauth-apple"],"source":"nvd","synced_at":"2026-10-19T21:11:20.317016139+00:00"},"epss":{"cve":"CVE-2020-26254","score":0.01338,"percentile":0.71272,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-49r3-2549-3633","url":"https://osv.dev/vulnerability/GHSA-49r3-2549-3633","summary":"omniauth-apple allows attacker to fake their email address during authentication","modified":"2026-09-10T03:48:59.943436208Z","packages":[{"ecosystem":"RubyGems","name":"omniauth-apple","purl":"pkg:gem/omniauth-apple","ranges":["<1.0.1"],"fixed":["1.0.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}