CVE-2026-35490
CRITICAL
INFO
Priority: 0.05
BB Relevance:
80/100
Published: 2026-04-07
Modified: 2026-10-26
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
Unchanged
C:
High
I:
High
A:
High
Description
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.
Weakness Classification (1)
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| webtechnologies | changedetection | < 0.54.8 |
References & Advisories (1)
Exploit
Mitigation
Vendor Advisory