Security readout for executives and security teams
Plain-English summary
CVE-2023-45604 affects the WordPress Get Custom Field Values plugin through version 4.0.1. A highly privileged admin user could store malicious script content that runs when another user views it. The business risk is moderate because exploitation requires admin-level access and user interaction, but successful abuse can affect browser-session data and site trust.
Executive priority
Treat this as a near-term WordPress hygiene item, not an emergency. Prioritize systems with many admins, sensitive sessions, or public-facing business impact, especially if admin accounts may have been compromised.
Technical view
The issue is authenticated stored XSS, classified as CWE-79, in Scott Reilly's Get Custom Field Values WordPress plugin <= 4.0.1. CVSS 3.1 is 5.9 with network access, low complexity, high privileges required, required user interaction, changed scope, and low confidentiality, integrity, and availability impacts.
Likely exposure
Exposure is likely limited to WordPress sites that have the get-custom-field-values plugin installed at version 4.0.1 or earlier and allow admin-level users to access the vulnerable functionality.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. The vulnerability requires admin-or-higher privileges and user interaction, reducing broad external exploitability but leaving risk from compromised administrators or hostile insiders.
Researcher notes
Evidence names <= 4.0.1 as affected, but the affected version field in the bundle is incomplete. No patch version or exploit activity is provided. Avoid assuming a fixed release; validate directly against vendor and Patchstack records.
Mitigation direction
- Inventory WordPress sites for the get-custom-field-values plugin and version.
- Check Patchstack and vendor guidance for any fixed release or recommended workaround.
- Restrict admin access to trusted users only.
- Remove or disable the plugin where it is not business-critical.
- Review admin accounts for compromise before closing the issue.
Validation and detection
- Confirm whether each WordPress site uses the plugin slug get-custom-field-values.
- Check whether installed versions are 4.0.1 or earlier.
- Verify admin access is limited and protected with strong authentication.
- Review recent plugin-related settings or content for suspicious script-like entries.
- Document remediation status against the vendor or Patchstack advisory.
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-79: 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-2023-45604 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
- 5.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/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:H/UI:R/S:C/C:L/I:L/A:L1.73.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.9MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/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.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.