Security readout for executives and security teams
Plain-English summary
This is a medium-severity CSRF issue in the WordPress Quiz And Survey Master plugin through version 8.1.18. An attacker may be able to trick a user into triggering an unintended plugin action, causing limited integrity or availability impact. The source bundle does not identify the exact action or a confirmed fixed version.
Executive priority
Treat as a routine but time-bound WordPress plugin remediation. It is not supported as actively exploited in the supplied evidence, but affected public sites should be inventoried and updated through vendor guidance.
Technical view
CVE-2023-51521 is CWE-352 in ExpressTech Quiz And Survey Master, package quiz-master-next, affecting versions through 8.1.18. CVSS 3.1 is 5.4 with network attack vector, low complexity, no attacker privileges, required user interaction, no confidentiality impact, and low integrity and availability impact.
Likely exposure
Exposure is likely limited to WordPress sites that have Quiz And Survey Master installed at version 8.1.18 or earlier. Sites without this plugin, or with versions outside the affected range, are not indicated as affected by the provided sources.
Exploitation context
The bundle does not show active exploitation, and the CVE is not listed as KEV. The CVSS vector indicates exploitation requires user interaction but no attacker privileges. No public exploit details are provided in the supplied sources.
Researcher notes
The source bundle lacks the vulnerable endpoint/action, nonce behavior, role context, and fixed-version detail. Validation should focus on asset inventory and version exposure rather than exploit reproduction. Avoid assuming broader WordPress impact beyond the named plugin and affected range.
Mitigation direction
- Inventory WordPress sites for Quiz And Survey Master plugin installations.
- Identify plugin versions and prioritize any version 8.1.18 or earlier.
- Check ExpressTech, WordPress plugin, or Patchstack guidance for the fixed release.
- Update the plugin when a vendor-confirmed fixed version is available.
- Limit administrative browsing exposure until affected installations are remediated.
Validation and detection
- Confirm whether quiz-master-next is installed on each WordPress site.
- Record the installed plugin version and compare it with 8.1.18.
- Review vendor or Patchstack advisory details for remediation status.
- Check site logs and admin activity for unexpected plugin changes.
- Verify remediation by confirming the plugin is no longer in the affected range.
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-352: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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 lookupCVE-2023-51521 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
- Medium
- CVSS
- 5.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
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:R/S:U/C:N/I:L/A:L2.82.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
Source materials
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.
Cross-Site Request Forgery (CSRF)
Cross-Site Request Forgery (CSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.