---
id: CVE-2026-71203
title: >-
  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 …
summary: >-
  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 …
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-306
published: '2026-08-05'
updated: '2026-08-10'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-71203'
references:
  - url: 'https://github.com/dgtlmoon/changedetection.io'
    label: 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
tags:
  - nvd
  - exploit-available
epss: 0.00313
epssPercentile: 0.21491
ingestedAt: '2026-08-10T12:39:48.229Z'
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/Nel-droid/CVE-2026-71203-PoC'
  checkedAt: '2026-09-25T08:21:10.516Z'
exploitAvailable: true
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.