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CVE-2021-36906

28
FAUCET Score

CVE-2021-36906 describes multiple Insecure Direct Object References (IDOR) vulnerabilities affecting the ExpressTech Quiz And Survey Master plugin for WordPress, specifically versions up to and including 7.3.6. This vulnerability carries a high CVSS score of 8.8, indicating a low-complexity network attack that can lead to high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 7.3.6CPE matchmatch criteria
cpe:2.3:a:expresstech:quiz_and_survey_master:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

2.7LOW

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
1.2
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.53%
Probability of exploitation in next 30 days
EPSS Percentile
41.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0053 is in the 31st percentile among its peer group of 17,823 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

patchstack.com / database/vulnerability/quiz-master-next/wordpress-quiz-and-survey-master-plugin-7-3-6-multiple-insecure-direct-object-references-idor-vulnerabilities
Third Party Advisory
wordpress.org / plugins/quiz-master-next
ProductRelease NotesThird Party Advisory