Vulnerability · Published Aug 21, 2026 · Assigned by VulnCheck
CVE-2026-77767Reconmap Report Preview Endpoint Is Marked AllowAnonymous, Exposing Every Project and Client Organisation Without Authentication
High 7.5
In plain English
A high-severity missing authorization in reconmap from reconmap. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).
Official description
Reconmap's API applies a fallback authorization policy in apps/api/app/Program.cs that requires an authenticated user holding the administrator role, so controllers without their own attribute reject anonymous callers. The report preview action in apps/api/app/Controllers/ReportsController.cs carries [AllowAnonymous] and therefore opts out of that policy. PreviewReport loads the Project row named by the id path segment, loads the linked Organisation through the project's ClientId, and renders both into default-report-template.html, which prints the project name and description together with the client organisation's name, address and URL. No authentication, project membership or role check is performed. Because the id is the auto-increment primary key of the project table, an unauthenticated remote caller can walk sequential ids to retrieve the engagement details and client organisation of every project on the instance, and the 404 returned for a missing id reveals which project ids exist. Reconmap stores penetration-testing engagements, so the disclosed descriptions and client records are sensitive by nature.
Affected products (as reported)
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
References
- GHSA-mhrh-jfmr-8mmw vendor-advisory
- PreviewReport marked AllowAnonymous technical-description
- Administrator fallback authorization policy technical-description
- AllowAnonymous removed from the preview action patch
- https://github.com/reconmap/reconmap product
- VulnCheck Advisory: Reconmap Report Preview Endpoint Is Marked AllowAnonymous, Exposing Every Project and Client Organisation Without Authentication third-party-advisory