CVE-2024-6879· NVD / CVE Program· CNA WPScan

Quiz and Survey Master (QSM) < 9.1.1 - Contributor+ Stored XSS

Noroxi assessment

Priority: Monitor (action score 18/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.43% (FIRST EPSS).
Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
Fixed version: Unknown Quiz and Survey Master (QSM) 9.1.1.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Unknown Quiz and Survey Master (QSM) 9.1.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

The Quiz and Survey Master (QSM) WordPress plugin before 9.1.1 fails to validate and escape certain Quiz fields before displaying them on a page or post where the Quiz is embedded, which could allows contributor and above roles to perform Stored Cross-Site Scripting (XSS) attacks.

MediumCVSS 4.7 · v3.1—No exploit Fix available

Published: Aug 26, 2024
Updated: Jun 17, 2026
EPSS: 0.4% · 36th percentile
CWE: CWE-79

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 18 / 40 · 4.7 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.4%

CISA SSVC decision

Exploitation: proof of concept
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

Is Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker on your site?

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
expresstech	quiz and survey master	cpe:2.3:a:expresstech:quiz_and_survey_master

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

expresstech quiz and survey masterbefore 9.1.1

Versions reported by the vendor

Affected version ranges reported by the assigning authority (WPScan). Independent of NVD's CPE analysis and usually ahead of it.

Unknown Quiz and Survey Master (QSM)
- before 9.1.1affected · semver

Same product

expresstech: all records

Other highest-scoring records for the same primary product.

CVE-2020-35951An issue was discovered in the Quiz and Survey Master plugin before 7.0.1 for WordPress.
62This week
CVE-2020-35949An issue was discovered in the Quiz and Survey Master plugin before 7.0.1 for WordPress.
41Plan
CVE-2022-41652WordPress Quiz And Survey Master plugin <= 7.3.10 - Bypass vulnerability
39Monitor

Published before and after this one in the same product

← EarlierCVE-2024-6025Jul 11, 2024 · Quiz and Survey Master < 9.0.5 - Contributor+ Stored XSS
21Monitor
← EarlierCVE-2024-6390Aug 3, 2024 · Quiz and Survey Master (QSM) < 9.1.0 - Contributor+ Stored XSS
23Monitor
Later →CVE-2024-8758Sep 23, 2024 · Quiz and Survey Master (QSM) < 9.1.3 - Author+ Stored XSS
19Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
Unknown Quiz and Survey Master (QSM)	9.1.1	Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Bereket Miheretfinder
WPScancoordinator

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2024-10679211 days apartQuiz and Survey Master (QSM) < 9.2.1 - Author+ Stored XSS
24Monitor
CVE-2024-639023 days apartQuiz and Survey Master (QSM) < 9.1.0 - Contributor+ Stored XSS
23Monitor
CVE-2024-27966138 days apartWordPress Quiz And Survey Master plugin <= 8.2.2 - Cross Site Scripting (XSS) vulnerability
23Monitor
CVE-2024-493456 days apartQuiz And Survey Master < 9.0.2 - Contributor+ Stored XSS
22Monitor
CVE-2024-602546 days apartQuiz and Survey Master < 9.0.5 - Contributor+ Stored XSS
21Monitor
CVE-2023-3575385 days apartQuiz And Survey Master < 8.1.11 - Contributor+ Stored XSS
21Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

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Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

TR-24-1332 · Aug 26, 2024(WordPress Eklenti Güvenlik Bildirimi)

All national notices →

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
A user must open a link or visit a page.
No special conditions are required; it is repeatable.

If successful

Confidentiality: none
Integrity: low · data or configuration can be modified
Availability: none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: Required
Scope: Changed
Confidentiality impact: None
Integrity impact: Low
Availability impact: None

Weakness class (CWE)

CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS vector

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

nvd-secondary

Root cause

User content is inserted into the page as HTML. The browser interprets the content as code rather than data.

The bug in code

The whole CWE-79 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1commentEl.innerHTML = comment.body;

Fixed

1commentEl.textContent = comment.body;

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

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Change log

Fix✗ → ✓Sep 28, 2026, 10:08 PM UTC

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