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CVE-2025-10493

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

Published: Sep 18, 2025Updated: Sep 18, 2025 Sources: CVE List NVDCWE-639
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.9%
Top 46.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Am I actually vulnerable?1 Nuclei template available — see how to check your systems. How to verify

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

AV:NAC:LPR:NUI:NS:UC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-639

Affected Products

Chained Quizprasunsen
On-prem
Web & CMS Plugins / site-builder
prasunsenindividual-devWeb & CMS Pluginsaka chained quiz, watu quiz, hostel

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/1d8f6965-1fe3-4f24-bd6b-9026e91bc5db?source=cve
wordfence.com
https://plugins.trac.wordpress.org/browser/chained-quiz/tags/1.3.3/controllers/quizzes.php
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/chained-quiz/tags/1.3.3/models/quiz.php
plugins.trac.wordpress.org
and 3 more references View all →

Timeline

Published
Sep 18, 2025
Last Updated
Sep 18, 2025

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