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CVE Record

CVE-2018-20756: MODX Revolution through v2.7.0-pl allows XSS via a document resource (such as pagetitle), which is mishandl...

MODX Revolution through v2.7.0-pl allows XSS via a document resource (such as pagetitle), which is mishandled during an Update action, a Quick Edit action, or the viewing of manager logs.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This CVE describes cross-site scripting in MODX Revolution through v2.7.0-pl. A crafted document resource field, such as a page title, may be mishandled in manager workflows and logs. The main business risk is script execution in the administrative interface, potentially affecting privileged users.

Executive priority

Prioritize if MODX powers public or business-critical sites and non-admin users can edit content. Otherwise handle in normal web application patch cycles.

Technical view

The reported issue is XSS triggered through document resource data, including pagetitle, during Update, Quick Edit, or manager log viewing. The source bundle does not provide CVSS, CWE, exploit status, or a confirmed fixed version. Treat impact as manager-session risk until MODX guidance confirms scope.

Likely exposure

Exposure is most likely for MODX Revolution deployments at or before v2.7.0-pl where users can create or edit resources and managers review updates or logs.

Exploitation context

The bundle does not show KEV listing or other evidence of active exploitation. The attack appears to require malicious resource content reaching MODX manager views or logs.

Researcher notes

Evidence is sparse: one CVE description and a GitHub issue reference. No CVSS, CWE, patch details, or exploit confirmation are present in the supplied bundle.

Mitigation direction

  • Inventory MODX Revolution instances and versions.
  • Check MODX issue and vendor guidance for fixed releases or workarounds.
  • Restrict manager access to trusted users only.
  • Limit resource editing permissions to necessary roles.
  • Review and sanitize suspicious resource fields, especially page titles.

Validation and detection

  • Confirm whether any deployment runs MODX Revolution v2.7.0-pl or earlier.
  • Review manager logs for unusual resource titles or script-like content.
  • Test remediation in staging using benign XSS indicators only.
  • Verify Update, Quick Edit, and log views safely render resource fields.
Prepared
Confidence
medium
Sources
3

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

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
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.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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