Improper input validation in Deluxebb

CVE-2009-4467

misc.php in DeluxeBB 1.3 allows remote attackers to register accounts without a valid email address via a valemail action with the valmem set to a pre-assigned user ID, which is visible from a memberlist action.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2009-12-30 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 4.0 (Medium). Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.017 (75.7th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 75.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Deluxebb — versions 1.3

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

www.securityfocus.com/bid/37448 (Exploit, vdb-entry)
www.exploit-db.com/exploits/10598 (Exploit, exploit)
exchange.xforce.ibmcloud.com/vulnerabilities/54979 (vdb-entry)