CVE-2018-1000503 json
MyBB Group MyBB contains a Incorrect Access Control vulnerability in Private forums that can result in Users can view posts from private fo…
published 2018-06-26 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-1901
- cvss
- 4.3
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 49%
- public exploits
- 0
- none known
Summary
MyBB Group MyBB contains a Incorrect Access Control vulnerability in Private forums that can result in Users can view posts from private forums without having the password. This attack appear to be exploitable via Subscribe to a forum through IDOR. This vulnerability appears to have been fixed in 1.8.15.
Patch / fix
- mybb mybb 1.8.15
Exploit prediction
0.61% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 4.3 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-269 Improper Privilege Management
References
-
blog.mybb.com
/2018/03/15/mybb-1-8-15-released-security-maintenance-release/
vendor-advisory
-
batterystapl.es
/2018/03/local-file-inclusion-and-reading.html
third-party-advisory
Sources
- CVE List CVE-2018-1000503
- NVD CVE-2018-1000503
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