Security readout for executives and security teams
Plain-English summary
This issue lets a logged-in WordPress administrator store malicious script content inside the VikRentCar plugin. Because administrator access is required and another user interaction is needed, the business risk is limited but real, especially on sites with shared or delegated admin accounts.
Executive priority
Handle as moderate-priority remediation. It is not evidenced as actively exploited, but it affects administrative trust boundaries on booking sites. Prioritize faster if the site is business-critical, has many administrator users, or relies on external agencies for WordPress management.
Technical view
CVE-2023-23998 is a stored XSS vulnerability, CWE-79, in E4J s.r.l. VikRentCar Car Rental Management System for WordPress versions <= 1.3.0. CVSS 3.1 is 5.9 with high privileges required, low attack complexity, required user interaction, changed scope, and low confidentiality, integrity, and availability impact.
Likely exposure
Likely exposure is WordPress installations running the VikRentCar plugin version 1.3.0 or earlier. Risk is higher where multiple staff, contractors, or agencies have WordPress administrator access. The provided sources do not list CPEs or a complete affected-version matrix.
Exploitation context
The source bundle does not show active exploitation, and the CVE is not marked KEV. Exploitation requires authenticated administrator-level access and user interaction, reducing broad internet-scale risk. Stored XSS could still affect trusted admin workflows or site management sessions if a privileged account is misused or compromised.
Researcher notes
Evidence confirms stored XSS and CVSS details but omits the vulnerable parameter, fixed version, and concrete remediation. Treat the vulnerability record as sufficient for exposure triage, but rely on vendor or Patchstack detail before writing detection logic or advising a specific upgrade target.
Mitigation direction
- Inventory WordPress sites for VikRentCar and record installed plugin versions.
- Check E4J or Patchstack guidance for a fixed release or vendor mitigation.
- Upgrade affected installations if a vendor-supported fixed version is available.
- Restrict WordPress administrator access to trusted users only.
- Review administrator accounts and remove unused or shared credentials.
Validation and detection
- Confirm whether VikRentCar is installed on each WordPress site.
- Verify whether the installed version is 1.3.0 or earlier.
- Review WordPress administrator account assignments and recent privileged activity.
- Check vendor or Patchstack records for fixed-version guidance.
- Use authenticated staging validation only; avoid testing on production workflows.
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-2023-23998 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.