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CVE-2024-4487 Blocksy Companion <= 2.0.45 - Authenticated (Contributor+) Stored Cross-Site Scripting via SVG Uploads

Medium 6.4 Published Updated

Authenticated attackers can inject arbitrary scripts via SVG uploads in Blocksy Companion, executing code when users view affected pages.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2024-4487?

CVE-2024-4487 is a medium-severity cross-site scripting vulnerability in creativethemeshq Blocksy Companion, published on 11 May 2024. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

The Blocksy Companion plugin for WordPress is vulnerable to Stored Cross-Site Scripting via SVG uploads in versions up to, and including, 2.0.45 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Weakness: CWE-79

Which versions are affected by CVE-2024-4487?

It affects 1 product.

Products include Creativethemes Blocksy Companion.

How do I fix CVE-2024-4487?

No fix has been published for CVE-2024-4487 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-2024-4487 being exploited?

There is no known exploitation of CVE-2024-4487 in the wild and no public exploit code.

Sources

Also known as GHSA-9mgf-hh2m-346c.

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