XSS in Orchardcore Orchard Core
CVE-2020-37019
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (37.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 37.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.000
Affected products
- Orchardcore Orchard Core — versions 1.0
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/48456 (exploit)
- www.orchardcore.net/ (product)
- github.com/OrchardCMS/OrchardCore (product)
- github.com/OrchardCMS/OrchardCore/issues/5802 (issue-tracking, patch)
- www.vulncheck.com/advisories/orchard-core-rc-persistent-cross-site-scripting (third-party-advisory)
Frequently asked questions
- What is CVE-2020-37019?
- CVE-2020-37019 is a medium-severity vulnerability in Orchardcore Orchard Core, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-01-30.
- How severe is CVE-2020-37019?
- Medium severity. CVSS v3 base score is 6.4 out of 10.