CVE-2021-36906

LOWNVD 2.78.8▲

2.7

Multiple Insecure Direct Object References (IDOR) vulnerabilities in ExpressTech Quiz And Survey Master plugin <= 7.3.6 on WordPress.

CVSS v3: 2.7
EG Score: 8.8(medium)
EPSS: 57.9%
KEV: Not listed

Published

November 3, 2022

Last Modified

February 20, 2025

References (4)

audit@patchstackhttps://patchstack.com/database/vulnerability/quiz-master-next/wordpress-quiz-and-survey-master-plugin-7-3-6-multiple-insecure-direct-object-references-idor-vulnerabilities?_s_id=cve
audit@patchstackhttps://wordpress.org/plugins/quiz-master-next/#developers
af854a3a-2127-422b-91ae-364da2661108https://patchstack.com/database/vulnerability/quiz-master-next/wordpress-quiz-and-survey-master-plugin-7-3-6-multiple-insecure-direct-object-references-idor-vulnerabilities?_s_id=cve
af854a3a-2127-422b-91ae-364da2661108https://wordpress.org/plugins/quiz-master-next/#developers

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-639Authorization Bypass Through User-Controlled Key (IDOR)

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
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2026-06-01 13:50 UTCepss_batch
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2026-05-31 22:29 UTCepss_batch
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2026-05-29 13:42 UTCepss_batch
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2026-05-28 13:43 UTCepss_batch
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2026-05-27 13:39 UTCepss_batch
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2026-05-26 07:17 UTCepss_batch
2026-05-25 12:40 UTCEG score recompute

Frequently asked(5)

What is CVE-2021-36906?

CVE-2021-36906 is a low vulnerability published on November 3, 2022. Multiple Insecure Direct Object References (IDOR) vulnerabilities in ExpressTech Quiz And Survey Master plugin <= 7.3.6 on WordPress.

When was CVE-2021-36906 disclosed?

CVE-2021-36906 was first published in the National Vulnerability Database on November 3, 2022, with the most recent update on February 20, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-36906 actively exploited?

CVE-2021-36906 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 57.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-36906?

CVE-2021-36906 has a CVSS v3 base score of 2.7 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 8.8.

How do I remediate CVE-2021-36906?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-36906, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2021-36906

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-36906?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)