Security readout for executives and security teams
Plain-English summary
CVE-2026-31918 is a stored cross-site scripting issue in the WordPress immonex Kickstart plugin through version 1.13.0. An attacker with some site privileges could store malicious script that runs when another user views the affected page. This can expose data, alter page content, or affect user sessions.
Executive priority
Treat as a moderate-priority WordPress exposure. Prioritize internet-facing sites, sites with many content contributors, and sites handling customer or lead data. No active exploitation is evidenced in the provided sources.
Technical view
The issue is CWE-79 improper neutralization during web page generation in immonex-kickstart. CVSS 3.1 is 6.5 with network attack vector, low complexity, low privileges required, and user interaction required. Scope is changed with low confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to WordPress sites using immonex Kickstart version 1.13.0 or earlier. The source bundle does not identify a fixed version, vulnerable parameter, or required plugin configuration.
Exploitation context
The CVE data indicates stored XSS requiring low privileges and user interaction. It is not listed as CISA KEV in the provided data, and no cited source claims active exploitation.
Researcher notes
Public detail is sparse. The record identifies stored XSS in immonex Kickstart through 1.13.0 but does not provide affected fields, proof of concept, exploit maturity, or fixed release data. Avoid assuming more than the CVE and Patchstack entry state.
Mitigation direction
- Inventory WordPress sites for the immonex Kickstart plugin.
- Check installed plugin versions and flag 1.13.0 or earlier.
- Review vendor or Patchstack guidance for an updated fixed release.
- Disable the plugin if it is not business-critical.
- Limit plugin-capable user accounts until remediation is confirmed.
Validation and detection
- Confirm whether immonex-kickstart is installed on each WordPress site.
- Record the installed plugin version from WordPress administration or asset inventory.
- Verify whether any vendor advisory names a fixed version.
- Review user roles with privileges to create or edit plugin-managed content.
- Monitor security logs for suspicious script-like content in WordPress fields.
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-2026-31918 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
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/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:L/UI:R/S:C/C:L/I:L/A:L2.33.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/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.