CVE-2023-53979

HIGH

MyBB 1.8.32 - Authenticated RCE

Title source: llm

Description

MyBB 1.8.32 contains a chained vulnerability that allows authenticated administrators to bypass avatar upload restrictions and execute arbitrary code. Attackers can modify upload path settings, upload a malicious PHP-embedded image file, and execute commands through the language configuration editing interface.

Exploits (1)

exploitdb WORKING POC

by lUc1f3r11 · pythonwebappsphp

https://www.exploit-db.com/exploits/51213

View Code ZIP pw:eip

References (5)

[Exploit, Third Party Advisory] https://fdlucifer.github.io/2023/01/17/mybb1-8-32-LFI-RCE/

[Product] https://mybb.com/

[Exploit] https://www.exploit-db.com/exploits/51213

[Exploit, Third Party Advisory] https://www.vulncheck.com/advisories/mybb-authenticated-remote-code-execution-via-chained-vulnerabilities

[Various Sources] https://www.cve.org/CVERecord?id=CVE-2022-45867

Scores

CVSS v3 8.8

EPSS 0.0011

EPSS Percentile 29.5%

Attack Vector NETWORK

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

Classification

CWE

CWE-22

Status published

Affected Products (1)

mybb/mybb

Timeline

Published Dec 22, 2025

Tracked Since Feb 18, 2026