Security readout for executives and security teams
Plain-English summary
CVE-2021-36898 is a SQL injection issue in the WordPress Quiz And Survey Master plugin through version 7.3.4. The main business risk is unauthorized database data exposure from affected websites. The source bundle rates it high severity, but does not show active exploitation.
Executive priority
Treat this as a priority remediation for WordPress estates because the likely impact is database confidentiality exposure. Absence from KEV reduces urgency compared with known-exploited issues, but internet-facing WordPress plugins are frequently targeted.
Technical view
The vulnerability is CWE-89 SQL injection in ExpressTech Quiz And Survey Master for WordPress, affecting versions <= 7.3.4. CVSS 3.1 is 7.5 with network attack vector, low complexity, no user interaction, and high confidentiality impact. Sources conflict slightly: the title says authenticated SQLi, while the CVSS vector lists no privileges required.
Likely exposure
Public WordPress sites using Quiz And Survey Master version 7.3.4 or earlier are the likely exposure. Risk depends on whether the plugin is installed, active, and reachable on the site.
Exploitation context
The bundle does not cite CISA KEV listing or active exploitation. CVSS indicates network-reachable, low-complexity exploitation with confidentiality impact, but the provided evidence does not include exploit maturity, payloads, or observed attacks.
Researcher notes
Use caution interpreting access requirements: the source title says authenticated SQLi, but the CVSS vector is PR:N. The bundle provides affected range and severity, but no technical root cause, endpoint detail, exploit status, or explicit fixed version.
Mitigation direction
- Inventory WordPress sites for Quiz And Survey Master installations.
- Upgrade beyond affected versions according to WordPress or vendor guidance.
- If immediate upgrade is not possible, disable the plugin temporarily.
- Restrict administrative access and review exposed quiz or survey functionality.
- Monitor vendor and Patchstack advisories for confirmed fixed-version guidance.
Validation and detection
- Check each WordPress site for the plugin and installed version.
- Confirm no active installation remains at version 7.3.4 or earlier.
- Review web and database logs for suspicious query errors or unusual access.
- Verify remediation through vulnerability scanning or WordPress plugin inventory.
- Document exceptions where upgrade or disablement is delayed.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-89: Database access and collection lookup
Injection into data stores can inform collection, data access, and exfiltration detection reviews. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupDatabase behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-36898 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.