The MyBB Cross-Poster WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and sanitization via several parameters found in the ~/classes/MyBBXPSettings.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 1.0. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled.
CVSS 3.x
| Source | Score | Severity | Vector | Exploitability | Impact |
|---|---|---|---|---|---|
| security@wordfence.com | 5.5 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N | 2.3 | 2.7 |
| nvd@nist.gov | 4.8 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N | 1.7 | 2.7 |
CVSS 2.0
Severity: LOW
Problem Type: CWE-79,
Products Affected
| Vendor | Product | Version |
|---|---|---|
| mybb_cross-poster_project | mybb_cross-poster | * |