CVE-2020-37019 Orchard Core RC1 - Persistent Cross-Site Scripting
Remote attackers can inject malicious scripts via blog posts, leading to arbitrary script execution in victim browsers.
- 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-2020-37019?
CVE-2020-37019 is a medium-severity cross-site scripting vulnerability in Orchardcore Orchard Core, published on 30 Jan 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Orchard Core RC1 contains a persistent cross-site scripting vulnerability that allows remote attackers to inject malicious scripts through blog post creation. Attackers can create blog posts with embedded JavaScript in the MarkdownBodyPart.Source parameter to execute arbitrary scripts in victim browsers.
Weakness: CWE-79
Which versions are affected by CVE-2020-37019?
How do I fix CVE-2020-37019?
No fix has been published for CVE-2020-37019 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-2020-37019 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37019 exists.
Sources
Also known as GHSA-gcg5-q479-jh6f.