Security readout for executives and security teams
Plain-English summary
This CVE describes a directory traversal flaw in Syncfusion EJ2 ASPCore File Provider sample/provider code. If deployed as reachable server functionality, an unauthenticated attacker could browse directories, download files, or upload files within locations the web server can access.
Executive priority
Prioritize quickly for any public or customer-facing deployment because the issue can expose sensitive files and allow unauthorized writes. If the code is only in a lab or unused sample, validate that status and document the finding.
Technical view
The source names Models/PhysicalFileProvider.cs in SyncfusionExamples/ej2-aspcore-file-provider commit 3ac357f. The reported failure is path traversal handling around file listing, download, and upload operations. No CVSS, CWE, affected version matrix, or confirmed vendor fix is included in the supplied sources.
Likely exposure
Exposure is most likely in ASP.NET Core applications that copied or deployed the Syncfusion EJ2 ASPCore File Provider code, especially where file-manager endpoints are internet-facing or unauthenticated. Product and version scope is incomplete in the sources.
Exploitation context
The CVE description states unauthenticated access can list, download, or upload files. The source bundle does not show CISA KEV listing or evidence of active exploitation. A public research repository is referenced, so defenders should assume technical details may be available.
Researcher notes
Evidence is narrow but concrete: the CVE identifies directory traversal in a specific provider file and commit. The public record lacks CVSS, CWE, exact affected releases, and fix details, so remediation should be validated against vendor and repository guidance.
Mitigation direction
- Identify deployments using the Syncfusion EJ2 ASPCore File Provider code.
- Check Syncfusion and repository guidance for corrected provider code before redeploying.
- Require authentication and authorization for all file-manager endpoints.
- Restrict file operations to an explicit allowlisted storage root.
- Limit web server filesystem permissions to required directories only.
- Disable upload functionality where it is not business-critical.
Validation and detection
- Inventory applications using the referenced provider or copied PhysicalFileProvider.cs code.
- Review file-manager routes for anonymous access or public exposure.
- Confirm directory listings cannot leave the intended storage root.
- Confirm downloads are limited to approved file locations.
- Confirm uploads cannot write outside approved directories.
- Review server logs for unusual file-manager listing, download, or upload activity.
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.
File 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-2023-26564 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
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.