CVE-2026-35490 (GCVE-0-2026-35490)

Vulnerability from cvelistv5 – Published: 2026-04-07 14:55 – Updated: 2026-04-09 14:37
VLAI
Title
changedetection.io has an Authentication Bypass via Decorator Ordering
Summary
changedetection.io is a free open source web page change detection tool. Prior to 0.54.8, the @login_optionally_required decorator is placed before (outer to) @blueprint.route() instead of after it. In Flask, @route() must be the outermost decorator because it registers the function it receives. When the order is reversed, @route() registers the original undecorated function, and the auth wrapper is never in the call chain. This silently disables authentication on these routes. This vulnerability is fixed in 0.54.8.
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-09 14:36 UTC
CWE
  • CWE-863 - Incorrect Authorization
References
Impacted products
Vendor Product Version CPE status
dgtlmoon changedetection.io Affected: < 0.54.8
guessed Create a notification for this product.
Show details on NVD website

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