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CVE-2023-4283 EmbedPress <= 3.8.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode

Medium 6.4 Published Updated

Authenticated contributors can inject arbitrary scripts via a shortcode, leading to stored XSS execution for other users.

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-2023-4283?

CVE-2023-4283 is a medium-severity cross-site scripting vulnerability in wpdevteam EmbedPress – PDF Embedder, Embed YouTube Videos, 3D FlipBook, Social feeds, Docs & more, published on 10 Aug 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

The EmbedPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'embedpress_calendar' shortcode in versions up to, and including, 3.8.2 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions 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-2023-4283?

It affects 1 product.

Products include Wpdeveloper Embedpress.

How do I fix CVE-2023-4283?

No fix has been published for CVE-2023-4283 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-2023-4283 being exploited?

There is no known exploitation of CVE-2023-4283 in the wild and no public exploit code.

Sources

Also known as GHSA-3wwh-6q6g-6h9m.

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