Vulnerability CVE-2021-27890
Published: 2021-03-15

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

See advisories in our WLB2 database:
Topic
Author
Date
High
MyBB 1.8.25 Remote Command Execution
SivertPL
22.03.2021

Type:

CWE-89

 (Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection'))

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.8/10
6.4/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
MYBB -> MYBB 

 References:
http://packetstormsecurity.com/files/161908/MyBB-1.8.25-Remote-Command-Execution.html
https://github.com/mybb/mybb/security/advisories/GHSA-r34m-ccm8-mfhq
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