Vulnerability in Mybb Merge System
CVE-2015-8973
xmlhttp.php in MyBB (aka MyBulletinBoard) before 1.6.18 and 1.8.x before 1.8.6 and MyBB Merge System before 1.8.6 allows remote attackers to bypass intended access restrictions via vectors related to the forum password.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.3 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.016 (75.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000
Affected products
- Mybb Merge System
- Mybb — versions 1.8.0, 1.8.1, 1.8.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- blog.mybb.com/2015/09/07/mybb-1-8-6-1-6-18-merge-system-1-8-6-release/ (Release Notes, Vendor Advisory)
- www.securityfocus.com/bid/94397 (VDB Entry, Third Party Advisory, vdb-entry)
- www.openwall.com/lists/oss-security/2016/11/18/1 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2016/11/10/8 (mailing-list, Third Party Advisory)
Frequently asked questions
- What is CVE-2015-8973?
- CVE-2015-8973 is a high-severity vulnerability in Mybb Merge System, classified under Improper Access Control. CVSS score: 8.3/10. Published 2017-01-31.
- How severe is CVE-2015-8973?
- High severity. CVSS v3 base score is 8.3 out of 10.
- Is CVE-2015-8973 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.