Security readout for executives and security teams
Plain-English summary
CVE-2023-3092 lets an unauthenticated attacker place script content into stored email subject data in the WordPress SMTP Mail plugin when “Save Data SendMail” is enabled. If a user later views the affected stored page, the script can run in their browser. This is a serious web application risk, especially for administrator sessions.
Executive priority
Treat this as a high-priority remediation for affected WordPress sites because it can target privileged users without attacker authentication. Prioritize internet-facing sites, sites with many form-generated emails, and sites where administrators routinely review stored mail data.
Technical view
The issue is stored cross-site scripting caused by insufficient input sanitization and output escaping of email subject data in SMTP Mail versions up to and including 1.3.46. The provided CVSS 3.1 score is 7.2 high, with network access, low complexity, no privileges, changed scope, and limited confidentiality and integrity impact.
Likely exposure
Exposure is most likely on WordPress sites running SMTP Mail at or below version 1.3.46 with the “Save Data SendMail” feature enabled. The source bundle’s structured affected-version field appears inconsistent, so asset validation should rely on installed plugin name, version, and feature state.
Exploitation context
The bundle states unauthenticated attackers can inject scripts through an email subject, which execute when a user accesses the injected page. CISA KEV status is false in the provided data, and no cited source in the bundle confirms active exploitation.
Researcher notes
The strongest evidence is the CVE description and Wordfence reference. The bundle links WordPress Trac files for code comparison, but it does not include a named fixed version or proof of exploitation. Note the apparent mismatch between the narrative affected range and structured affected metadata.
Mitigation direction
- Identify WordPress sites running SMTP Mail at or below version 1.3.46.
- Disable “Save Data SendMail” until vendor guidance or a fixed release is confirmed.
- Update the SMTP Mail plugin if a vendor-fixed version is available.
- Restrict WordPress administrator access to trusted users and networks where feasible.
- Review stored mail records for suspicious subject content before re-enabling saved data.
Validation and detection
- Inventory WordPress installations for the SMTP Mail plugin and installed version.
- Check whether the “Save Data SendMail” feature is enabled.
- Confirm whether administrators can access stored sent-mail data pages.
- Review plugin changelog or vendor advisory for a fixed version before closure.
- Inspect logs and stored mail subjects for unexpected script-like content.
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-2023-3092 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
- 7.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
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:C/C:L/I:L/A:N3.92.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.2HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/8ae734d1-0cd4-4ff5-8448-828b0fb64f70?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/smtp-mail/trunk/includes/data-list-table.phpCVE reference
- https://plugins.trac.wordpress.org/browser/smtp-mail/tags/1.3.43/includes/data-list-table.phpCVE reference
- https://plugins.trac.wordpress.org/browser/smtp-mail/tags/1.3.42/includes/data-list-table.phpCVE reference
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.