What is CVE-2018-12580?

CVE-2018-12580 is a medium-severity vulnerability in Dragonbyte-Tech Vbsecurity, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-06-19.

How severe is CVE-2018-12580?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Dragonbyte-Tech Vbsecurity

CVE-2018-12580

library/DBTech/Security/Action/Sessions.php in DragonByte vBSecurity 3.x through 3.3.0 for vBulletin 3 and vBulletin 4 allows self-XSS via $session['user_agent'] in the "Login Sessions" feature.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-06-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (49.2th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Dragonbyte-Tech Vbsecurity

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.dragonbyte-tech.com/threads/security-bulletin-low-vbsecurity-for-vbulletin-… (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2018-12580?: CVE-2018-12580 is a medium-severity vulnerability in Dragonbyte-Tech Vbsecurity, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-06-19.
How severe is CVE-2018-12580?: Medium severity. CVSS v3 base score is 6.1 out of 10.