{"cve":"CVE-2026-118394","nvd":{"published":"2026-11-01T10:18:36.227","modified":"2026-11-01T10:18:36.330","status":"Deferred","description":"The OAuth2 userinfo endpoint (`/login/oauth/userinfo`) decided whether to limit the `groups` claim to public organizations by re-parsing the `Authorization` header as an OAuth2 access token instead of using the scope of the credential that authenticated the request. When a public-only OAuth2 token was sent as a query parameter or form field, or a public-only personal access token was used, that scope came back empty and the claim listed the token owner's private organizations, teams and concealed memberships. The disclosure is limited to the owner's organization and team names and memberships; no repository content is exposed. The endpoint now uses the scope of the authenticating token.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-200","CWE-863"],"references":["https://blog.gitea.com/release-of-28.3.0/","https://github.com/go-gitea/gitea/pull/39690","https://github.com/go-gitea/gitea/pull/39853","https://github.com/go-gitea/gitea/releases/tag/v28.3.0","https://github.com/go-gitea/gitea/security/advisories/GHSA-q9gm-9c7q-c5hq"],"reference_tags":[{"url":"https://blog.gitea.com/release-of-28.3.0/","tags":[]},{"url":"https://github.com/go-gitea/gitea/pull/39690","tags":[]},{"url":"https://github.com/go-gitea/gitea/pull/39853","tags":[]},{"url":"https://github.com/go-gitea/gitea/releases/tag/v28.3.0","tags":[]},{"url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-q9gm-9c7q-c5hq","tags":[]}],"products":[],"affected":[],"source":"nvd","synced_at":"2026-11-01T10:34:16.358491727+00:00"},"epss":{"cve":"CVE-2026-118394","score":0.00198,"percentile":0.09604,"date":"2026-11-01"},"kev":null,"exploits":[],"weaknesses":[{"name":"Exposure of Sensitive Information to an Unauthorized Actor","common_name":null,"deprecated":false,"replaced_by":[],"id":"CWE-200"},{"name":"Incorrect Authorization","common_name":null,"deprecated":false,"replaced_by":[],"id":"CWE-863"}],"osv":[],"fixed":[],"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.","Public exploits: links to the Exploit Database (https://www.exploit-db.com, by OffSec; index under GPL-2.0), Rapid7's Metasploit Framework modules (https://github.com/rapid7/metasploit-framework, BSD-3-Clause) and ProjectDiscovery's nuclei templates (https://github.com/projectdiscovery/nuclei-templates, MIT). Only the links, titles and dates are stored; no exploit code is fetched or served.","CWE names and descriptions: MITRE's Common Weakness Enumeration (https://cwe.mitre.org), Copyright © 2006–2026, The MITRE Corporation, under the CWE terms of use (https://cwe.mitre.org/about/termsofuse.html). CWE is a trademark of The MITRE Corporation."]}