CVE-2025-10493

MEDIUM EPSS 53.7%

Published Sep 18, 20259mo ago · Modified Jun 17, 20262w ago

5.3 CVSS 3.1

Medium

Published Sep 18, 2025 9mo ago

Last Modified Jun 17, 2026 2w ago

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 Details

Base Score

5.3

Exploitability

3.9

Impact

1.4

Vector string

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope Unchanged

Confidentiality None

Integrity Low

Availability None

Threat Intelligence

EPSS Exploit Probability

53.7% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-639

References 6

plugins.trac.wordpress.org 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 https://plugins.trac.wordpress.org/changeset/3362561/
plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3362701/
plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3362966/
wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/1d8f6965-1fe3-4f24-bd6b-9026e91bc5db?source=cve

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.