Persistent Cross-Site Scripting in Orchard Core RC1 by Orchard
CVE-2020-37019

5.1MEDIUM

Key Information:

Vendor

Orchardcore

Status
Orchard Core
Vendor
CVE Published:
30 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2020-37019?

Orchard Core RC1 is susceptible to a persistent cross-site scripting vulnerability that enables attackers to inject malicious scripts into blog posts. By exploiting this flaw, malicious actors can craft blog entries containing harmful JavaScript via the MarkdownBodyPart.Source parameter. When unsuspecting users visit these infected blog pages, the scripts can execute in their browsers, potentially leading to data theft, session hijacking, or other impactful attacks.

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Affected Version(s)

Orchard Core 1.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2020-37019 - Proof of Concept

References

https://www.exploit-db.com/exploits/48456
exploit
http://www.orchardcore.net/
product
https://github.com/OrchardCMS/OrchardCore
product

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

SunCSR (Sun* Cyber Security Research)
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