CVE-2023-53890 Perch CMS 3.2 Stored Cross-Site Scripting via SVG File Upload
Authenticated attackers can upload malicious SVG files to execute JavaScript, potentially stealing session data or performing client-side attacks.
- 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-2023-53890?
CVE-2023-53890 is a medium-severity cross-site scripting vulnerability in Perch, published on 15 Dec 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Perch CMS 3.2 contains a stored cross-site scripting vulnerability that allows authenticated users to upload malicious SVG files with embedded JavaScript. Attackers can craft SVG files with script tags that execute when the file is viewed, potentially stealing user session information or performing client-side attacks.
Weakness: CWE-79
Which versions are affected by CVE-2023-53890?
It affects 1 product.
Products include Grabaperch Perch.
How do I fix CVE-2023-53890?
No fix has been published for CVE-2023-53890 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-2023-53890 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-53890 exists.
Other vulnerabilities in Perch
Sources
Also known as GHSA-j5m3-4q76-pf42.