PT-2021-10277 · Mybb · Mybb

Joelister · Published 2021-08-31 · Updated 2024-03-06 · CVE-2020-19048

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 version 1.8.20

Description: The issue allows remote attackers to inject arbitrary web script or HTML via the Title field in the Add New Forum page. This can be achieved by doing an authenticated POST HTTP request to '/Upload/admin/index.php?module=forum-management&action=add'.

Recommendations: For MyBB version 1.8.20, as a temporary workaround, consider restricting access to the 'Title' field in the Add New Forum page until a patch is available. Avoid using the Title field in the affected API endpoint 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-2020-19048

CVE-2020-19048

Affected Products

Mybb

References · 5

• 🔥 https://github.com/joelister/bug/issues/1 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-19048 · Security Note
• https://osv.dev/vulnerability/BIT-mybb-2020-19048 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-19048 · Vendor Advisory
• https://t.me/cibsecurity/28092 · Telegram Post