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Cve-2026-49757

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medium advisory

CVE-2026-49757: AshAuthentication OAuth2/OIDC Account Takeover

AshAuthentication incorrectly uses email addresses to link OAuth2/OIDC identities to local accounts, enabling unauthenticated account takeover via identity providers that allow unverified or reclaimed emails.

AshAuthentication account-takeover cve-2026-49757 oauth oidc authentication-bypass
1t 1c