Security readout for executives and security teams
Plain-English summary
CVE-2022-50685 is a stored cross-site scripting issue in Kentico Xperience. An authenticated user can upload a crafted XML file as a page attachment or metafile, causing script to run later in another user’s browser. Business impact is mainly account misuse, content tampering, or data exposure within the affected site context.
Executive priority
Treat as a near-term CMS hygiene fix, not an emergency based on available evidence. Prioritize if untrusted or broad contributor accounts can upload files, or if the Kentico site supports sensitive customer or internal workflows.
Technical view
The issue is CWE-79 stored XSS affecting Kentico Xperience versions described by VulnCheck as <= 13.0.56. Attack requires network access, low privileges, and user interaction. CVSS 3.1 is 5.4 with changed scope and low confidentiality and integrity impact. Availability impact is not indicated.
Likely exposure
Exposure is most relevant for Kentico Xperience sites where authenticated users can upload XML files as page attachments or metafiles. Internet-facing CMS administration or contributor workflows increase practical risk.
Exploitation context
No source in the bundle, including KEV status, indicates active exploitation. The attack is not unauthenticated; it depends on an authenticated uploader and a later victim viewing affected content.
Researcher notes
Source data contains a version inconsistency: the affected field lists version “0,” while the title and advisory describe Kentico Xperience <= 13.0.56. Use vendor hotfix records and the VulnCheck advisory to confirm exact affected builds before scoping.
Mitigation direction
- Check Kentico DevNet hotfix guidance for the affected Xperience version.
- Prioritize updating systems at or below Xperience 13.0.56.
- Restrict XML attachment and metafile uploads to trusted roles where possible.
- Review CMS contributor permissions and remove unnecessary upload rights.
Validation and detection
- Inventory Kentico Xperience instances and record exact versions.
- Confirm whether any instance is at or below 13.0.56.
- Review upload permissions for page attachments and metafiles.
- Check vendor hotfix status after remediation.
- Monitor CMS content for unexpected XML uploads or script-like content.
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-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.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2022-50685 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
- 5.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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:L/UI:R/S:C/C:L/I:L/A:N2.32.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- Kentico DevNet HotfixesCVE reference · vendor-advisory, patch
- VulnCheck Advisory: Kentico Xperience <= 13.0.56 File Upload Stored XSSCVE 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.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.