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VulnerabilityPublished Updated

CVE-2025-10493: Chained Quiz (WordPress plugin) · Insecure Direct Object Reference

Affects Chained Quiz (WordPress plugin)Source CVE Database V5

0

Public exploit available (Exploit-DB) · CVSS 5.3 Medium · fixed in 1.3.4 : patch Chained Quiz (WordPress plugin) as a priority.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 3.1 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.9% chance of exploitation in 30 days – higher than 59% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.3.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Exploitation evidence

t = 0 is the CVE’s publication on cve.org

  1. Disclosed: evidence found.

    CVE published 18 Sep 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  4. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

Timeline

  1. CVE ID reserved

    by Wordfence

    , 3 days before disclosure

  2. CVE published

    on cve.org

    , t = 0

  3. In Threat Radar

    record ingested

    , 7 hours after disclosure

  4. First Exploit-DB entry (opens in a new tab)

    Chained Quiz 1.3.5 - Unauthenticated Insecure Direct Object Reference via Cookie

    , 98 days after disclosure

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
prasunsen Chained QuizAffected
  • =0
Fixed in–

AI-suggested

Partial patches exist in versions 1.3.4 and 1.3.5, but the full remediation status is not confirmed. Users should upgrade to the latest plugin version once a complete fix is released.

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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