Orchard Core RC1 - Persistent Cross-Site Scripting
Priority MEDIUM 56CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00473 41st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| orchardcms | Orchard Core | 1.0 | — | No fix listed | CNA |
- Orchard Core Vendororchardcms Affected 1.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-37019
- 2026-10-03 Alias added: GHSA-gcg5-q479-jh6f
References
More orchardcms vulnerabilities
- TI-2021-07972 Orchard Core CMS - Improper Session Termination after Password Change CVSS 3.1HIGH 8.8
- TI-2022-17540 Orchardproject Orchard CMS 1.10.3 is vulnerable to Cross Site Scripting (XSS). CVSS 3.1CRITICAL 9.0
- TI-2026-83123 Orchard CMS media library lets authors access other users' media CVSS 4.0HIGH 7.1
- TI-2022-00728 Improper Authorization in orchardcms/orchardcore CVSS 3.1MEDIUM 6.5
- TI-2022-00727 Cross-site Scripting (XSS) - Stored in orchardcms/orchardcore CVSS 3.1MEDIUM 6.1
- TI-2022-13899 OrchardCore - HTML Injection CVSS 3.1MEDIUM 5.4
Sources
- CVE-2020-37019 · CVE Program
- CVE-2020-37019 · NVD
- FIRST EPSS
- GHSA-gcg5-q479-jh6f · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences