The Admin control panel in MyBB (aka MyBulletinBoard) before 1.8.7 and MyBB Merge System before 1.8.7 allows remote attackers to conduct cl…

published 2017-01-31 9y ago modified 2026-06-17 4mo ago also EUVD-2016-10223

cvss: 6.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.7%; EPSS 1.7% chance of exploitation in 30 days, percentile 76%
public exploits: 0; none known

The Admin control panel in MyBB (aka MyBulletinBoard) before 1.8.7 and MyBB Merge System before 1.8.7 allows remote attackers to conduct clickjacking attacks via unspecified vectors.

Patch / fix

links 3

openwall.com/lists/oss-security/2016/11/18/1 advisory
openwall.com/lists/oss-security/2016/11/10/8 advisory
blog.mybb.com/2016/03/11/mybb-1-8-7-merge-system-1-8-7-release/ advisory

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Exploit prediction

1.65% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	6.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness

CWE-284 Improper Access Control

References

openwall.com /lists/oss-security/2016/11/18/1
mailing-list, patch, third-party-advisory
openwall.com /lists/oss-security/2016/11/10/8
mailing-list, patch, third-party-advisory
blog.mybb.com /2016/03/11/mybb-1-8-7-merge-system-1-8-7-release/
patch, third-party-advisory, vendor-advisory
securityfocus.com /bid/94395
vdb-entry, third-party-advisory

Sources

CVE List CVE-2016-9413
NVD CVE-2016-9413

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.