Security readout for executives and security teams
Plain-English summary
A WordPress plugin that logs email can store unsafe email subject text and later run it as script in an administrator’s browser. A site using Mailtree Log Mail up to version 1.0.0 could expose admin sessions or allow tampering with viewed pages.
Executive priority
Treat this as a high-priority plugin remediation item for affected WordPress sites, especially where administrators routinely review email logs. The main business risk is account/session exposure through stored browser-side code.
Technical view
CVE-2023-3135 is stored cross-site scripting in oacstudio Mailtree Log Mail for WordPress, caused by insufficient sanitization and output escaping of email subjects. The CVSS 3.1 score is 7.2, with network access, low complexity, no privileges, and changed scope.
Likely exposure
Exposure is likely limited to WordPress installations running Mailtree Log Mail versions up to and including 1.0.0. The bundle’s affected metadata is sparse, so confirm against plugin inventory and vendor or WordPress plugin records.
Exploitation context
The source bundle says unauthenticated attackers can inject scripts via email subject content that execute when a user accesses the injected page. CISA KEV is false in the bundle, and no cited source states active exploitation.
Researcher notes
The core weakness is CWE-79 stored XSS through email subject handling. Evidence supports unauthenticated injection and stored execution, but the bundle does not clearly name a fixed release or provide active exploitation evidence.
Mitigation direction
- Inventory WordPress sites for Mailtree Log Mail installations.
- Update the plugin if a fixed release is available.
- Disable or remove the plugin if no fixed version is confirmed.
- Review vendor and WordPress plugin guidance before restoring use.
- Limit access to mail log views until remediation is complete.
Validation and detection
- Confirm installed plugin versions are not 1.0.0 or earlier.
- Check whether changeset 2928716 sanitization and escaping changes are present.
- Review mail log entries for suspicious subject content.
- Verify administrative log pages render subjects as inert text.
- Confirm no unexpected scripts execute when viewing mail logs.
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-2023-3135 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
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.