#VU28540 Stored cross-site scripting in bbPress - CVE-2020-13487

Vulnerability identifier: #VU28540

Vulnerability risk: Low

CVSSv4.0: 2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P/U:Clear]

CVE-ID: CVE-2020-13487

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
bbPress
Web applications / Modules and components for CMS

Vendor: JJJ

Description

The disclosed vulnerability allows a remote user to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in the forums list table. A remote user with Keymaster role can permanently inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation
Install update from vendor's website.

Vulnerable software versions

bbPress: 2.0 beta-1 - 2.6.4

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External links
https://bbpress.org/
https://codex.bbpress.org/releases/
https://wordpress.org/plugins/bbpress/#developers
https://www.youtube.com/watch?v=3rXP8CGTe08

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.