PT-2023-29573 · Mybb · Mybb

Or4Ngm4N · Published 2023-11-06 · Updated 2024-03-06 · CVE-2023-45556

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Mybb Mybb Forums version 1.8.33

Description The issue allows a local attacker to execute arbitrary code via the theme Name parameter in the theme management component. This is a Cross Site Scripting issue.

Recommendations For Mybb Mybb Forums version 1.8.33, consider restricting access to the theme management component to minimize the risk of exploitation. Avoid using the theme Name parameter in the theme management component until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

XSS

Weakness Enumeration

CWE-79

Related Identifiers

BIT-MYBB-2023-45556

CVE-2023-45556

GHSA-4XQM-3CM2-5XGF

Affected Products

Mybb

References · 7

• 🔥 https://github.com/Or4ngm4n/Mybb/blob/main/MyBB%201.8.33%20Cross%20Site%20Scripting.txt · Exploit
• https://github.com/mybb/mybb/security/advisories/GHSA-4xqm-3cm2-5xgf · Patch
• https://osv.dev/vulnerability/BIT-mybb-2023-45556 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-45556 · Security Note
• https://osv.dev/vulnerability/CVE-2023-45556 · Vendor Advisory
• https://raw.githubusercontent.com/Or4ngm4n/Mybb/main/Screenshot%202023-10-08%20012112.png · Note
• https://t.me/cibsecurity/73645 · Telegram Post