Security readout for executives and security teams
Plain-English summary
This is a stored cross-site scripting issue in the WordPress SimpleModal Contact Form plugin. The reported attacker needs administrator-level access, and another user interaction is required, so business urgency is moderate rather than emergency-level. Sites still running version 1.2.9 or earlier should verify vendor guidance and reduce exposure.
Executive priority
Treat this as a moderate-priority WordPress hygiene issue. It does not justify emergency response based on the supplied evidence, but outdated or unsupported plugins on public sites should be remediated during the next maintenance window.
Technical view
CVE-2023-29438 is an authenticated admin+ stored XSS vulnerability, CWE-79, in Eric Martin SimpleModal Contact Form (SMCF) for WordPress through 1.2.9. CVSS 3.1 is 5.9 with low attack complexity, high privileges required, user interaction required, changed scope, and low confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to WordPress sites with SimpleModal Contact Form (SMCF), package simplemodal-contact-form-smcf, version 1.2.9 or earlier. The source bundle does not provide install prevalence, fixed-version details, or affected CPEs.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. The CVSS vector indicates exploitation requires network access, admin-level privileges, and user interaction, reducing mass-exploitation likelihood but leaving risk if admin accounts are compromised or shared.
Researcher notes
Key evidence gaps remain: no fixed version, patch detail, exploit proof, or affected CPE list is provided in the bundle. Analysis should stay scoped to authenticated admin+ stored XSS in SMCF through 1.2.9.
Mitigation direction
- Inventory WordPress sites for SimpleModal Contact Form (SMCF) and installed version.
- Check Patchstack and vendor guidance for a fixed release or replacement path.
- Disable or remove the plugin where it is unused or unsupported.
- Limit WordPress administrator access to trusted accounts with MFA.
- Review admin account hygiene and remove stale privileged users.
Validation and detection
- Confirm whether simplemodal-contact-form-smcf is installed on each WordPress instance.
- Record plugin versions and flag any version 1.2.9 or earlier.
- Review WordPress admin user lists for unnecessary privileged accounts.
- Check security monitoring for suspicious administrator activity around plugin settings.
- Use vendor or trusted scanner checks to confirm remediation status.
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-2023-29438 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.