5.4

CVE-2021-36865: expresstech quiz and survey master (wordpress plugin)

CVSS: 5.4v3.1MediumModified
Published 30-09-2022Last modified 28-04-2026
Open JSON

Vulnerability summary

CVE-2021-36865 is a medium (CVSS 5.4) vulnerability in expresstech quiz and survey master (wordpress plugin). EPSS estimates a 0.51% chance of exploitation in the next 30 days, higher than 42.5% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.4/10
010
Medium · v3.1 (wordfence)
EPSS score
0.51%
0%100%
Low · +0.06 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 30-09-2022
    PublishedVulnerability first disclosed.
  2. 28-04-2026
    Last modifiedVulnerability information updated.

Description

Insecure direct object references (IDOR) vulnerability in ExpressTech Quiz And Survey Master plugin <= 7.3.4 at WordPress allows attackers to change the content of the quiz.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.51%

Chance of exploitation in the next 30 days

Percentile

43%

Versus all other CVEs

30-day change

+0.06 pp

From 0.45% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.51%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Expresstech1 product
Quizandsurveymaster1 product
Wordpress1 product
  • quiz-master-next≤ 7.3.4 (fixed in 7.3.5)

3 vendors · 3 products

References

3 links