Security readout for executives and security teams
Plain-English summary
CVE-2023-51355 is a high-severity access-control flaw in the WordPress MultiVendorX plugin through version 4.0.23. The record indicates remote attackers may perform unauthorized actions without logging in. Business risk is mainly unauthorized data or marketplace changes, with some availability impact.
Executive priority
Treat this as a near-term remediation item for any WordPress commerce or marketplace site using MultiVendorX. Prioritize externally reachable production sites first because the vulnerability is remote and requires no authentication.
Technical view
The CVE describes missing authorization in MultiVendorX dc-woocommerce-multi-vendor, mapped to CWE-862. CVSS 3.1 is 8.2: network-reachable, low complexity, no privileges, no user interaction, unchanged scope, high integrity impact, low availability impact, and no confidentiality impact.
Likely exposure
Exposure is likely limited to WordPress sites running the MultiVendorX plugin package dc-woocommerce-multi-vendor at version 4.0.23 or earlier. The source bundle does not identify affected endpoints, configurations, or non-WordPress products.
Exploitation context
The CVE is not listed as KEV in the provided bundle, and no cited source in the bundle states active exploitation. The CVSS vector still suggests practical remote abuse because exploitation requires no credentials or user interaction.
Researcher notes
Available evidence confirms missing authorization and affected versions through 4.0.23, but does not provide affected functions, proof of exploitation, or a confirmed patched version in the supplied bundle. Avoid assuming exploit availability or a specific fix beyond vendor guidance.
Mitigation direction
- Inventory WordPress sites for dc-woocommerce-multi-vendor and record installed versions.
- Update MultiVendorX if vendor guidance identifies a fixed release.
- If no fix is available, consider disabling the plugin until guidance is clear.
- Review Patchstack and vendor advisories for supported mitigation instructions.
- Monitor for unauthorized marketplace, settings, or content changes.
Validation and detection
- Confirm whether MultiVendorX is installed on each WordPress site.
- Flag any installation running version 4.0.23 or earlier.
- Review logs for unauthenticated or unexpected state-changing requests.
- Check administrative audit trails for unauthorized plugin-related changes.
- Document compensating controls if the plugin cannot be updated or disabled.
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-2023-51355 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
- 8.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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:N/S:U/C:N/I:H/A:L3.94.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.2HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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.
Missing Authorization
Missing Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.