Published: 15/03/2021 Updated: 21/09/2021

CVSS v2 Base Score: 4.3 | Impact Score: 2.9 | Exploitability Score: 8.6

CVSS v3 Base Score: 6.1 | Impact Score: 2.7 | Exploitability Score: 2.8

VMScore: 383

Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Cross-site Scripting (XSS) vulnerability in MyBB prior to 1.8.26 via Nested Auto URL when parsing messages.

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MyBB version 1825 chain remote command execution exploit that leverages cross site scripting and SQL injection vulnerabilities ...

MyBB version 1825 suffers from a remote SQL injection vulnerability ...

Mybb associate CVE-2021-27890 & CVE-2021-27889 to RCE poc

Mybb-XSS_SQL_RCE-POC Mybb associate CVE-2021-27890 & CVE-2021-27889 to RCE poc Before Use: There are two files here: 1js and attack_listenpy You should modify these two file: 1js: modify the mybb forum url and attack url: var bashurl = '19216892164/mybb/mybb-mybb_1825' #mybb forum url var attack_url = '19216892165:8080/attack_succ

CWE-79 https://github.com/mybb/mybb/security/advisories/GHSA-xhj7-3349-mqcm http://packetstormsecurity.com/files/161908/MyBB-1.8.25-Remote-Command-Execution.html https://blog.sonarsource.com/mybb-remote-code-execution-chain https://nvd.nist.gov https://github.com/xiaopan233/Mybb-XSS_SQL_RCE-POC https://packetstormsecurity.com/files/161908/MyBB-1.8.25-Remote-Command-Execution.html

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CVE-2021-27889

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