CVE-2026-45297CWE-285CWE-639CWE-863

Cross-tenant IDOR on feature-flag and assist-stats routes via {project_id} case mismatch

Medium · published May 28, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
27.5
In the wild
Unconfirmed
What it is

OpenReplay is a self-hosted session replay suite. Prior to 1.26.0, there is a cross-tenant IDOR on feature-flag and assist-stats routes via {project_id} case mismatch. ProjectAuthorizer.__call__ (OSS api/auth/auth_project.py:14-38 and EE ee/api/auth/auth_project.py:14-46) only runs projects.is_authorized(project_id, tenant_id, user_id) + projects.get_project(tenant_id, project_id) when self.project_identifier == "projectId" (camelCase). For EE multi-tenant, feature-flag queries only filter on project_id, never tenant_id. Any authenticated user in tenant A can read/update/delete feature-flag rows belonging to tenant B by iterating the sequential integer project_id + feature_flag_id. OSS is single-tenant by design ({"errors":["tenants already registered"]} on second signup) so there's no cross-tenant impact This vulnerability is fixed in 1.26.0.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00351 · 27.5th percentile
Weaknesses
CWE-285 · Improper Authorization; CWE-639 · Authorization Bypass Through User-Controlled Key; CWE-863 · Incorrect Authorization
Published
2026-05-28T16:50Z
EPSS history
Timeline
  • 28 MAY 16:50Z
    Cross-tenant IDOR on feature-flag and assist-stats routes via {project_id} case mismatch
    cvelistv5