CVE-2026-48780 – Forem vulnerable to bypass of email address domain restrictions

CVE ID :CVE-2026-48780

Published : June 16, 2026, 3:16 p.m. | 25 minutes ago

Description :Forem is open source software for building communities. Prior to commit a2ab6d4, a maliciously crafted email address could allow an attacker to bypass domain allowlist or denylist restrictions and gain access to invite-only forem deployments. The issue is patched as of `a2ab6d4`. As a workaround, some SMTP servers and email delivery providers may drop or refuse to send maliciously crafted email addresses.

Severity: 8.2 | HIGH

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