What is CVE-2018-1000503?

CVE-2018-1000503 is a medium-severity vulnerability in Mybb, classified under Improper Privilege Management. CVSS score: 4.3/10. Published 2018-06-26.

How severe is CVE-2018-1000503?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Privilege escalation in Mybb

CVE-2018-1000503

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.

Vulnerability class: Privilege Escalation

EPSS: 0.006 (46.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Mybb
N/a — versions n/a

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2018-1000503?: CVE-2018-1000503 is a medium-severity vulnerability in Mybb, classified under Improper Privilege Management. CVSS score: 4.3/10. Published 2018-06-26.
How severe is CVE-2018-1000503?: Medium severity. CVSS v3 base score is 4.3 out of 10.