CVE-2021-24334 Instant Images WordPress Plugin < 4.4.0.1 - Authenticated Stored XSS & XFS
Authenticated attackers can inject malicious scripts via unsplash download parameters, potentially leading to session hijacking or site compromise.
- 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-2021-24334?
CVE-2021-24334 is a medium-severity cross-site scripting vulnerability in Unknown Instant Images – One Click Unsplash Uploads, published on 1 Jun 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
The Instant Images – One Click Unsplash Uploads WordPress plugin before 4.4.0.1 did not properly validate and sanitise its unsplash_download_w and unsplash_download_h parameter settings (/wp-admin/upload.php?page=instant-images), only validating them client side before saving them, leading to a Stored Cross-Site Scripting issue.
Weakness: CWE-79
Which versions are affected by CVE-2021-24334?
It affects 1 product.
Products include Connekthq Instant Images - One Click Unsplash Uploads.
How do I fix CVE-2021-24334?
No fix has been published for CVE-2021-24334 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-2021-24334 being exploited?
There is no known exploitation of CVE-2021-24334 in the wild and no public exploit code.
Other vulnerabilities in Unknown Instant Images – One Click Unsplash Uploads
Sources
Also known as GHSA-wfh8-qv3m-93p3.