CVE-2025-10493CWE-639

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

Medium · published September 18, 2025

CVSS v3.1
5.3
EPSS
1%
Percentile
59.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00916 · 59.8th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2025-09-18T06:49Z
EPSS history
Timeline
  • 18 SEP 06:49Z
    Chained Quiz <= 1.3.5 - Unauthenticated Insecure Direct Object Reference via Cookie
    cvelistv5