XSS in Mybb Merge System
CVE-2016-9421
Cross-site scripting (XSS) vulnerability in the Users module in the Admin control panel in MyBB (aka MyBulletinBoard) before 1.8.8 and MyBB Merge System before 1.8.8 might allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
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: 0.013 (68.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
Weakness classification (CWE)
References
- blog.mybb.com/2016/10/17/mybb-1-8-8-merge-system-1-8-8-release/ (Patch, Release Notes, Vendor Advisory)
- www.openwall.com/lists/oss-security/2016/11/18/1 (mailing-list, Patch, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2016/11/10/8 (mailing-list, Patch, Mailing List, Third Party Advisory)
- www.securityfocus.com/bid/94396 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2016-9421?
- CVE-2016-9421 is a medium-severity vulnerability in Mybb Merge System, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2017-01-31.
- How severe is CVE-2016-9421?
- Medium severity. CVSS v3 base score is 6.1 out of 10.