CVE-2025-10493
Chained Quiz <= 1.3.5 - Unauthenticated Insecure Direct Object Reference via Cookie
mediumAuthorization Bypass Through User-Controlled Key
5.3
CVSS Score
5.3
CVSS Score
medium
Severity
1.3.6
Patched in
1d
Time to patch
Description
The Chained Quiz plugin for WordPress is vulnerable to Insecure Direct Object Reference in version 1.3.4 and below via the quiz submission and completion mechanisms due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to hijack and modify other users' quiz attempts by manipulating the chained_completion_id cookie value, allowing them to alter quiz answers, scores, and results of any user. The vulnerability was partially patched in versions 1.3.4 and 1.3.5.
CVSS Vector Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NAttack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
None
Confidentiality
Low
Integrity
None
Availability
Technical Details
Affected versions
<=1.3.5PublishedSeptember 17, 2025
Last updatedSeptember 18, 2025
Affected pluginchained-quiz
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