CVE-2026-48780

Source
https://cve.org/CVERecord?id=CVE-2026-48780
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48780.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-48780
Aliases
  • GHSA-3g4h-9h37-mpx6
Published
2026-06-16T14:10:27Z
Modified
2026-08-12T03:51:29Z
Severity
  • 8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N CVSS Calculator
Summary
Forem vulnerable to bypass of email address domain restrictions
Details

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.

Database specific
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-287"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48780.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "fixed":  "a2ab6d4"
                }
            ],
            "source":  "AFFECTED_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/forem/forem

Affected ranges

Type
GIT
Repo
https://github.com/forem/forem
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
Database specific
Show details
{
    "source":  "REFERENCES"
}

Affected versions

stable.*
stable.20210804.0

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48780.json"