CVE-2025-10493

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

CVSS 5.3 MEDIUMEPSS 0.9%CWE-639

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.3EPSS 0.9%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

18 Sep 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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

Affected products

prasunsen · Chained Quiz

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References

https://plugins.trac.wordpress.org/browser/chained-quiz/tags/1.3.3/controllers/quizzes.php https://plugins.trac.wordpress.org/browser/chained-quiz/tags/1.3.3/models/quiz.php https://plugins.trac.wordpress.org/changeset/3362561/https://plugins.trac.wordpress.org/changeset/3362701/https://plugins.trac.wordpress.org/changeset/3362966/https://www.wordfence.com/threat-intel/vulnerabilities/id/1d8f6965-1fe3-4f24-bd6b-9026e91bc5db?source=cve