Chained Quiz <= 1.3.5 - Unauthenticated Insecure Direct Object Reference via Cookie

5.3
Authorization Bypass Through User-Controlled Key
CVE CVE-2025-10493
CVSS 5.3 (Medium)
Publicly Published September 17, 2025
Last Updated September 18, 2025
Researcher 0xsabre

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.

References

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Vulnerability Details for Chained Quiz

Software Type Plugin
Software Slug chained-quiz (view on wordpress.org)
Patched? Yes
Remediation Update to version 1.3.6, or a newer patched version
Affected Version
  • <= 1.3.5
Patched Version
  • 1.3.6

Recent vulnerabilities in Chained Quiz

# Title CVE ID CVSS Researchers Date
1 Chained Quiz <= 1.3.2.9 - Authenticated (Admin+) Server-Side Request Forgery CVE-2025-24701 5.5 Marek Mikita January 24, 2025
2 Chained Quiz <= 1.3.2.8 - Missing Authorization CVE-2024-37921 5.3 Manab Jyoti Dowarah July 9, 2024
3 Chained Quiz <= 1.3.2.8 - Authenticated (Administrator+) Stored Cross-Site Scripting CVE-2024-37446 4.4 Manab Jyoti Dowarah June 28, 2024
4 Chained Quiz <= 1.3.2.5 - Authenticated (Admin+) Stored Cross-Site Scripting CVE-2023-25027 5.5 yuyudhn February 6, 2023
5 Chained Quiz <= 1.3.2 - Reflected Cross-Site Scripting via pointsf CVE-2022-4209 6.1 Muhammad Zeeshan (Xib3rR4dAr) December 2, 2022
6 Chained Quiz <= 1.3.2.3 - Reflected Cross-Site Scripting via date CVE-2022-4215 6.1 Muhammad Zeeshan (Xib3rR4dAr) December 2, 2022
7 Chained Quiz <= 1.3.2.2 - Authenticated (Admin+) Stored Cross-Site Scripting via Facebook App ID CVE-2022-4216 5.5 Muhammad Zeeshan (Xib3rR4dAr) December 2, 2022
8 Chained Quiz <= 1.3.2 - Reflected Cross-Site Scripting via dnf CVE-2022-4210 6.1 Muhammad Zeeshan (Xib3rR4dAr) December 2, 2022
9 Chained Quiz <= 1.3.2.4 - Cross-Site Request Forgery to Submitted Response Deletion CVE-2022-4219 5.4 Muhammad Zeeshan (Xib3rR4dAr) December 2, 2022
10 Chained Quiz <= 1.3.2.2 - Reflected Cross-Site Scripting via dn CVE-2022-4213 6.1 Muhammad Zeeshan (Xib3rR4dAr) December 2, 2022

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