Security readout for executives and security teams
Plain-English summary
CVE-2023-51507 is a missing authorization issue in the WordPress Quiz And Survey Master plugin through version 8.1.16. An unauthenticated network attacker may be able to perform an unauthorized action that affects data integrity. The provided sources do not show data theft, outage impact, or active exploitation.
Executive priority
Treat this as a moderate-priority WordPress plugin exposure. It does not currently justify emergency response based on the provided evidence, but internet-facing WordPress sites using the affected plugin should be inventoried and updated or mitigated promptly.
Technical view
The vulnerability is classified as CWE-862 Missing Authorization in ExpressTech Quiz And Survey Master, package slug quiz-master-next. CVSS 3.1 is 5.3 with network access, low complexity, no privileges, no user interaction, unchanged scope, no confidentiality impact, low integrity impact, and no availability impact.
Likely exposure
Exposure is most likely on public WordPress sites running Quiz And Survey Master version 8.1.16 or earlier. Sites without this plugin, or running versions outside the affected range, are not indicated as affected by the supplied bundle.
Exploitation context
The supplied bundle marks KEV as false and provides no cited evidence of active exploitation. It also does not include exploit details, affected endpoints, or a confirmed fixed version, so exploitation likelihood cannot be assessed beyond the CVSS characteristics.
Researcher notes
The public bundle is limited. It identifies missing authorization and CVSS impact but does not name the vulnerable function, request path, exploit preconditions beyond CVSS, remediation version, or proof of active exploitation. Avoid assuming broader impact without vendor or Patchstack detail.
Mitigation direction
- Inventory WordPress sites for the Quiz And Survey Master plugin.
- Confirm whether installed versions are 8.1.16 or earlier.
- Check ExpressTech, WordPress plugin, or Patchstack guidance for a fixed release.
- Upgrade when vendor guidance identifies a safe fixed version.
- Disable or remove the plugin where exposure is unnecessary.
Validation and detection
- Verify the plugin slug quiz-master-next is installed on each WordPress site.
- Record the installed plugin version and compare it with 8.1.16.
- Review administrative audit logs for unexpected quiz or survey changes.
- Check web logs for unusual unauthenticated activity against plugin functionality.
- Track vendor advisories until fixed-version details are confirmed.
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-862: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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-2023-51507 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
- 5.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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:N/I:L/A:N3.91.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
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.
Missing Authorization
Missing Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.