What is CVE-2026-48780?

CVE-2026-48780 is a high-severity vulnerability in Forem, classified under Improper Authentication. CVSS score: 8.2/10. Published 2026-06-16.

How severe is CVE-2026-48780?

High severity. CVSS v3 base score is 8.2 out of 10.

Auth bypass in Forem

CVE-2026-48780

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 deploymen…

Vulnerability class: Broken Authentication

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N.

Affected products

Forem — versions < a2ab6d4

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-48780?: CVE-2026-48780 is a high-severity vulnerability in Forem, classified under Improper Authentication. CVSS score: 8.2/10. Published 2026-06-16.
How severe is CVE-2026-48780?: High severity. CVSS v3 base score is 8.2 out of 10.