CVE-2026-71203
changedetection.io: Missing Authentication on /api/v1/full-spec Discloses Full OpenAPI Schema
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
changedetection.io's REST API resources are protected by an @auth.check_token decorator validating the caller's x-api-key header, except the Spec resource registered at /api/v1/full-spec (changedetectionio/api/Spec.py), whose get() method carries neither @auth.check_token nor @validate_openapi_request. An unauthenticated client can retrieve the full merged OpenAPI schema (all endpoint paths, parameters, and registered processor plugins) even when API access control is enabled and every sibling /api/v1/* route correctly requires the key.
| CWE | CWE-306 |
| Vendor | dgtlmoon |
| Product | changedetection.io |
| Published | Aug 5, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
dgtlmoon / changedetection.io
0.55.7
Credits
Eldor Nabijonov