CVE-2023-53979

8.8 HIGH
Published: December 22, 2025 Modified: December 27, 2025
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://fdlucifer.github.io/2023/01/17/mybb1-8-32-LFI-RCE/
Source: disclosure@vulncheck.com
Exploit Third Party Advisory
https://mybb.com/
Source: disclosure@vulncheck.com
Product
https://www.exploit-db.com/exploits/51213
Source: disclosure@vulncheck.com
Exploit
https://www.vulncheck.com/advisories/mybb-authenticated-remote-code-execution-via-chained-vulnerabilities
Source: disclosure@vulncheck.com
Exploit Third Party Advisory
https://www.cve.org/CVERecord?id=CVE-2022-45867
Source: af854a3a-2127-422b-91ae-364da2661108

5 reference(s) from NVD

Quick Stats

CVSS v3 Score
8.8 / 10.0
EPSS (Exploit Probability)
0.1%
19th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-22

Affected Vendors

mybb

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