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CVE-2026-48780

8.2 · HIGH

Forem is open source software for building communities.

Published Jun 16, 2026CWE-287EPSS 0.37%

Overview

CVE-2026-48780 is a high-severity vulnerability. It was published on June 16, 2026 and has a CVSS 3.1 base score of 8.2 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/forem/forem/commit/a2ab6d409d2676eb0711ecbd737192043125b437GitHubgithub.com/forem/forem/security/advisories/GHSA-3g4h-9h37-mpx6

How CyberStrike helps

Frequently asked questions

What is CVE-2026-48780?

CVE-2026-48780 is a high-severity vulnerability. It was published on June 16, 2026 and has a CVSS 3.1 base score of 8.2 (HIGH).

How severe is CVE-2026-48780?

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-48780?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-48780?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-48780 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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