CVE-2023-28787: expresstech quiz and survey master SQL Injection
CVSS: 9.8v3.1CriticalDeferred
Published 26-03-2024Last modified 28-04-2026
Vulnerability summary
CVE-2023-28787 is a critical (CVSS 9.8) SQL Injection vulnerability in expresstech quiz and survey master. EPSS estimates a 1.96% chance of exploitation in the next 30 days, higher than 80% of scored vulnerabilities. Fixed in 8.1.5.
CVSS score
9.8/10
010
Critical · v3.1 (wordfence)EPSS score
1.96%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 26-03-2024PublishedVulnerability first disclosed.
- 28-04-2026Last modifiedVulnerability information updated.
Description
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in ExpressTech Quiz And Survey Master.This issue affects Quiz And Survey Master: from n/a through 8.1.4.
CVSS metrics
3 scores · 3 sources · 1 versionCritical 9.8Preferred score · wordfence (Source)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSources3 sources · 9.3–9.8
- CVE.orgCNA9.3CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:LDiffers
- NVDNIST9.3CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:LDiffers
EPSS trend
Probability
1.96%
Chance of exploitation in the next 30 days
Percentile
80%
Versus all other CVEs
30-day change
0.00 pp
From 1.96% on 20-09-2026
20-09-202620-10-2026
EPSS score1.96%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Expresstech1 product
- quiz and survey master≥ n/a, ≤ 8.1.4
Wordpress1 product
- quiz-master-next≤ 8.1.4 (fixed in 8.1.5)
2 vendors · 2 products
References
2 links- patchstack.com/database/…VDB Entry