CVE-2026-9230Network attack vector

Contributor-level quiz tampering via nonce ownership bypass

Published Jul 3, 2026 · Updated Jul 3, 2026

Authorization bypass in Quiz and Survey Master 11.1.4 and earlier allows remote authenticated users to modify quizzes they do not own. The /quiz/structure endpoint issues a nonce for an arbitrary quiz ID, and the email-save endpoint accepts it without verifying quiz ownership. Contributor-level access is sufficient to overwrite result pages and redirect quiz-result notifications to attacker-controlled addresses.

CVSS severity4.3
Medium
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Quiz and Survey Master 11.1.4 and earlier allows remote authenticated users to modify quizzes they do not own. The /quiz/structure endpoint issues a nonce for an arbitrary quiz ID, and the email-save endpoint accepts it without verifying quiz ownership. Contributor-level access is sufficient to overwrite result pages and redirect quiz-result notifications to attacker-controlled addresses.

The record

CVE
CVE-2026-9230
Published
Jul 3, 2026
Updated
Jul 3, 2026
Vendor
ExpressTech Systems
Product
Quiz and Survey Master
Classifications
CWE-862, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=11.1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ExpressTech Systems · Quiz and Survey Masterversion=0 <=11.1.4

Published CVSS scores

4.3WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1565.001Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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