CVE-2026-71204

changedetection.io - Omitted Checkbox in /settings Save Silently Disables API Key Enforcement

Published Aug 5, 2026 CVSS 3.1 · 6.3 Medium EPSS < 1% KEV · Not listed
Description
changedetection.io's /settings save handler builds an update dict from form.data['application'] and blind-merges it into the stored application settings via .update.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Description changedetection.io's /settings save handler builds an update dict from form.data['application'] and blind-merges it into the stored application settings via .update(). Because WTForms represents an unchecked checkbox as False rather than 'unchanged', and only the 'password' field is special-cased against this problem, a POST to /settings that omits the api_access_token_enabled field (e.g. a minimal scripted request) silently disables API key enforcement for the entire REST API, exposing the full watch list, history, and configuration to unauthenticated requests. changedetection.io's /settings save handler builds an update dict from form.data['application'] and blind-merges it into the stored application settings via .update.
Type Values Removed Values Added
Title changedetection.io: Omitted Checkbox in /settings Save Silently Disables API Key Enforcement changedetection.io - Omitted Checkbox in /settings Save Silently Disables API Key Enforcement
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Dgtlmoon
Dgtlmoon changedetection.io
Vendors & Products Dgtlmoon
Dgtlmoon changedetection.io
Type Values Removed Values Added
Description changedetection.io's /settings save handler builds an update dict from form.data['application'] and blind-merges it into the stored application settings via .update(). Because WTForms represents an unchecked checkbox as False rather than 'unchanged', and only the 'password' field is special-cased against this problem, a POST to /settings that omits the api_access_token_enabled field (e.g. a minimal scripted request) silently disables API key enforcement for the entire REST API, exposing the full watch list, history, and configuration to unauthenticated requests.
Title changedetection.io: Omitted Checkbox in /settings Save Silently Disables API Key Enforcement
Weaknesses CWE-284
References
Metrics cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
TuranSec
Published
Updated
Aug 10, 2026, 11:45 AM
Reserved
Aug 5, 2026, 6:56 AM
Status
Deferred
Published
Aug 5, 2026, 8:16 AM
Modified
Oct 24, 2026, 3:10 PM