CVE-2020-25877 Cross-site scripting in n/a

Medium 5.4 Published 9 Jul 2021 Updated 4 Aug 2024

Authenticated attackers can execute arbitrary scripts via the Title parameter in the Add Page feature of BlackCat CMS.

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

What is CVE-2020-25877?

CVE-2020-25877 is a medium-severity cross-site scripting vulnerability in n/a, published on 9 Jul 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

A stored cross site scripting (XSS) vulnerability in the 'Add Page' feature of BlackCat CMS 1.3.6 allows authenticated attackers to execute arbitrary web scripts or HTML via a crafted payload entered into the 'Title' parameter.

Weakness: CWE-79

Which versions are affected by CVE-2020-25877?

It affects 1 product.

Products include Blackcat-Cms Blackcat Cms.

How do I fix CVE-2020-25877?

No fix has been published for CVE-2020-25877 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-2020-25877 being exploited?

There is no known exploitation of CVE-2020-25877 in the wild and no public exploit code.

Sources

Also known as GHSA-vfxh-2vqx-ggfv.