CVE-2016-9403 json
newreply.php in MyBB (aka MyBulletinBoard) before 1.8.7 and MyBB Merge System before 1.8.7 allows remote attackers to have unspecified impa…
published 2017-01-31 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-10213
- cvss
- 9.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.6%
- EPSS 2.6% chance of exploitation in 30 days, percentile 85%
- public exploits
- 0
- none known
Summary
newreply.php in MyBB (aka MyBulletinBoard) before 1.8.7 and MyBB Merge System before 1.8.7 allows remote attackers to have unspecified impact by leveraging a missing permission check.
Patch / fix
Exploit prediction
2.56% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-264 Permissions, Privileges, and Access Controls
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, release-notes, vendor-advisory
-
securityfocus.com
/bid/94395
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2016-9403
- NVD CVE-2016-9403
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.