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.
Published: 2026-06-16
Score: 8.2 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Thu, 18 Jun 2026 04:45:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 16 Jun 2026 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Forem
Forem forem
Vendors & Products Forem
Forem forem

Tue, 16 Jun 2026 15:00:00 +0000

Type Values Removed Values Added
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.
Title Forem vulnerable to bypass of email address domain restrictions
Weaknesses CWE-287
References
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-17T13:49:28.484Z

Reserved: 2026-05-22T20:18:20.365Z

Link: CVE-2026-48780

cve-icon Vulnrichment

Updated: 2026-06-17T13:49:24.251Z

cve-icon NVD

Status : Deferred

Published: 2026-06-16T15:16:41.640

Modified: 2026-06-16T15:46:16.230

Link: CVE-2026-48780

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-17T22:45:13Z

Weaknesses