PT-2022-27014 · Mybb · Mybb

Published 2022-11-21 · Updated 2025-04-29 · CVE-2022-43708

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions MyBB version 1.8.31

Description The issue allows attackers to inject HTML by persuading the user to upload a file with a specially crafted name, exploiting cross-site scripting (XSS) vulnerabilities in the post Attachments interface.

Recommendations For MyBB version 1.8.31, as a temporary workaround, consider restricting the ability to upload files with specially crafted names to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

XSS

Weakness Enumeration

CWE-79

Related Identifiers

BIT-MYBB-2022-43708

CVE-2022-43708

GHSA-P9M7-9QV4-X93W

Affected Products

Mybb

References · 8

• https://github.com/mybb/mybb/security/advisories/GHSA-p9m7-9qv4-x93w · Patch
• https://osv.dev/vulnerability/CVE-2022-43708 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-43708 · Security Note
• https://osv.dev/vulnerability/BIT-mybb-2022-43708 · Vendor Advisory
• https://t.me/cvenotify/120194 · Telegram Post
• https://t.me/cvenotify/38182 · Telegram Post
• https://mybb.com · Note
• https://t.me/cvenotify/38219 · Telegram Post