CVE-2023-53979

None

CVSS

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EPSS

0.8%

Published

Dec 22, 2025

CISA due date

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The record

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.

Affected packages

Ecosystem	Package	Introduced	Fixed