CVE-2021-27890 Information

Description

SQL Injection vulnerablity in MyBB before 1.8.26 via theme properties included in theme XML files.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

https://github.com/mybb/mybb/security/advisories/GHSA-r34m-ccm8-mfhq http://packetstormsecurity.com/files/161908/MyBB-1.8.25-Remote-Command-Execution.html https://blog.sonarsource.com/mybb-remote-code-execution-chain

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8