Security readout for executives and security teams
Plain-English summary
Kentico Xperience sites may expose internal “virtual context” URLs to third-party domains through the HTTP Referer header. This is a confidentiality issue, not a system takeover. Business risk depends on whether exposed URLs reveal sensitive preview, editing, or contextual information used by staff or site administrators.
Executive priority
Treat as a moderate-priority confidentiality issue. Prioritize environments where CMS editors handle sensitive unpublished content, customer information, or restricted workflows. It should be addressed through routine patching and configuration review rather than emergency response, unless internal testing shows sensitive data leakage.
Technical view
CVE-2019-25228 is an information disclosure issue in Kentico Xperience reported for versions up to 12.0.47. During page builder interactions and loading links or images from third-party domains, virtual context URLs can be leaked via Referer headers. The CVSS 3.1 score is 5.3, with low confidentiality impact and no integrity or availability impact.
Likely exposure
Organizations running Kentico Xperience, especially version 12.0.47 or earlier, may be exposed if users interact with external domains from page builder or content contexts. Public-facing CMS deployments with embedded third-party resources deserve review.
Exploitation context
The provided sources do not report active exploitation, and this CVE is not listed as KEV in the source bundle. Exploitation appears to rely on sensitive context being sent to external domains through normal browser Referer behavior, rather than direct code execution.
Researcher notes
Evidence identifies CWE-497 and CVSS vector AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N. The source bundle names Kentico Xperience <= 12.0.47, but the affected version entry is sparse. Validate version impact against Kentico and VulnCheck before broad scoping.
Mitigation direction
- Review Kentico’s hotfix guidance for the affected Xperience version.
- Apply the relevant Kentico hotfix or vendor-recommended update.
- Audit third-party links, images, and embedded resources used in page builder workflows.
- Review Referrer-Policy settings to limit sensitive URL leakage where appropriate.
Validation and detection
- Inventory Kentico Xperience deployments and identify versions at or below 12.0.47.
- Confirm whether page builder content loads third-party domains.
- Check whether Referer headers disclose virtual context URLs to external services.
- Verify hotfix status against Kentico’s official hotfix page.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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-497: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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.
Open ATT&CK lookupCVE-2019-25228 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
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.
CVSS vector scores
1 official scoreWe 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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N3.91.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- Kentico DevNet HotfixesCVE reference · vendor-advisory, patch
- VulnCheck Advisory: Kentico Xperience <= 12.0.47 Virtual Context Information DisclosureCVE reference · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Exposure of Sensitive System Information to an Unauthorized Control Sphere
Exposure of Sensitive System Information to an Unauthorized Control Sphere represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.