10

CVE-2020-35949: expresstech quiz and survey master

CVSS: 10.0v3.1CriticalModified
Published 01-01-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-35949 is a critical (CVSS 10.0) vulnerability in expresstech quiz and survey master. EPSS estimates a 5.15% chance of exploitation in the next 30 days, higher than 92.3% of scored vulnerabilities. 2 public exploits are recorded. Fixed in 7.0.1.

Overall risk
90/100
0100
Critical · default modelHow is this calculated?
CVSS score
10.0/10
010
Critical · v3.1 (CVE.org)
EPSS score
5.15%
0%100%
Low · +0.21 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2reference

Timeline

  1. 01-01-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in the Quiz and Survey Master plugin before 7.0.1 for WordPress. It made it possible for unauthenticated attackers to upload arbitrary files and achieve remote code execution. If a quiz question could be answered by uploading a file, only the Content-Type header was checked during the upload, and thus the attacker could use text/plain for a .php file.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

5.15%

Chance of exploitation in the next 30 days

Percentile

92%

Versus all other CVEs

30-day change

+0.21 pp

From 4.93% on 20-09-2026

20-09-202620-10-2026
EPSS score
5.15%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

2 found
  • referenceUnverified

    Exploit Reference (wordfence.com)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (wpscan.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Expresstech1 product
Wordpress1 product
  • quiz-master-next< 7.0.1

2 vendors · 2 products

References

3 links