CVE Watch1 nov 2026

CVE-2026-120263

When `[oauth2_client].ACCOUNT_LINKING` is set to `auto` (not the default) and registration is enabled, the link-account sign-up form looked

CVSS

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Sin CVSS

EPSS

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KEV

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Exploit Today

0-100

Publicado: 1 nov 2026 · Última mod.: 1 nov 2026 · CWE-287 · CWE-639

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

When `[oauth2_client].ACCOUNT_LINKING` is set to `auto` (not the default) and registration is enabled, the link-account sign-up form looked up the existing account to link by the user name or email submitted in the form instead of the identity asserted by the OAuth2 provider. An attacker with an account on a configured OAuth2 provider could submit another user's name, link their external identity to that Gitea account and be signed in as it without its password, including as an administrator. The link persisted for later sign-ins. Automatic linking now only happens when the existing account matches the provider's email or provider-derived user name; otherwise the account password is required.

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