CVE-2021-42365 Asgaros Forums <= 1.15.13 Authenticated Stored XSS

What is CVE-2021-42365?

CVE-2021-42365 is a medium-severity cross-site scripting vulnerability in Asgaros Forums, published on 29 Nov 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

The Asgaros Forums WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient escaping via the name parameter found in the ~/admin/tables/admin-structure-table.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 1.15.13. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled.

Weakness: CWE-79

Which versions are affected by CVE-2021-42365?

It affects 1 product.

Products include Asgaros Asgaros Forum.

How do I fix CVE-2021-42365?

No fix has been published for CVE-2021-42365 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2021-42365 being exploited?

There is no known exploitation of CVE-2021-42365 in the wild and no public exploit code.

Other vulnerabilities in Asgaros Forums

• CVE-2023-5604 Asgaros Forum < 2.7.1 - Unauthenticated Arbitrary File Upload Critical 9.8
• CVE-2021-24827 Asgaros Forum < 1.15.13 - Unauthenticated SQL Injection Critical 9.8
• CVE-2022-0411 Asgaros Forum < 2.0.0 - Subscriber+ Blind SQL Injection High 8.8
• CVE-2024-22284 WordPress Asgaros Forum Plugin <= 2.7.2 is vulnerable to PHP Object Injection High 8.7
• CVE-2021-25045 Asgaros Forum < 1.15.15 - Admin+ SQL Injection via forum_id High 7.2

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-8h56-96mw-r96r.