CVE-2021-27310 Cross-site scripting in n/a

Medium 6.1 Published Updated

Unauthenticated attackers can execute arbitrary scripts in victim browsers via the language parameter in Clansphere CMS.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2021-27310?

CVE-2021-27310 is a medium-severity cross-site scripting vulnerability in n/a, published on 23 Mar 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Clansphere CMS 2011.4 allows unauthenticated reflected XSS via "language" parameter.

Weakness: CWE-79

Which versions are affected by CVE-2021-27310?

It affects 1 product.

Products include Csphere Clansphere.

How do I fix CVE-2021-27310?

No fix has been published for CVE-2021-27310 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-2021-27310 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-27310 exists.

Public exploit code: 1 Nuclei template.

Sources

Also known as GHSA-gwcx-pjgx-wqm5.

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