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CVE Record

CVE-2020-37019: Orchard Core RC1 - Persistent Cross-Site Scripting

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.

MediumCVSS 6.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2020-37019 is a stored cross-site scripting issue in Orchard Core RC1/1.0 blog post creation. A logged-in attacker with post creation ability could store script content that later runs in other users’ browsers, potentially affecting session data or page integrity.

Executive priority

Treat as a moderate-priority web application risk. Prioritize if Orchard Core is internet-facing, supports user-generated content, or is used by privileged administrators. The main concern is stored browser-side script execution, not server takeover.

Technical view

The issue is CWE-79 in Orchard Core, involving insufficient handling of JavaScript embedded through the MarkdownBodyPart.Source parameter during blog post creation. CVSS 3.1 is 6.4, with network access, low complexity, low privileges, changed scope, and low confidentiality and integrity impact.

Likely exposure

Exposure is most likely for organizations running affected Orchard Core RC1/1.0 deployments with blog creation enabled, especially where non-administrative or semi-trusted users can create posts. Public-facing sites increase business impact because stored content may be viewed by privileged users or customers.

Exploitation context

A public Exploit-DB entry exists, so proof-of-concept details are publicly available. The source bundle does not show CISA KEV listing or other evidence of active exploitation. Successful exploitation appears to require an account or role able to create blog posts.

Researcher notes

Evidence identifies Orchard Core RC1/1.0 and MarkdownBodyPart.Source as the injection point. Public exploit information exists, but active exploitation is not established in the provided sources. Fixed-version details are not included in the bundle, so remediation should be verified against Orchard Core guidance.

Mitigation direction

  • Consult Orchard Core GitHub issue #5802 and project releases for the applicable fix.
  • Upgrade or patch only according to Orchard Core vendor guidance.
  • Temporarily restrict blog post creation to trusted users.
  • Review existing blog content for unexpected script-like markup.

Validation and detection

  • Inventory Orchard Core deployments and confirm exact versions.
  • Check whether affected blog and Markdown content features are enabled.
  • Review user roles allowed to create or edit blog posts.
  • Use approved scanners or vendor checks for CVE-2020-37019.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · medium confidence lookup

CWE-79: User-session and phishing behavior lookup

Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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cve · low confidence lookup

CVE-2020-37019 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.4 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
5Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
6.4CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N3.12.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

6.4Medium
CVSS 3.1 vector shape for CVE-2020-37019Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
OrchardcoreOrchard Core1.0Listed
Weakness

CWE details

CWE-79

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.