Security readout for executives and security teams
Plain-English summary
YayMail for WooCommerce has a stored cross-site scripting flaw in versions up to 4.3.2. A trusted store user with Shop Manager or higher privileges could save malicious script in email template settings. It affects only multisite sites and sites where unfiltered_html is disabled. Business risk is limited but real for compromised or overly broad store accounts.
Executive priority
Handle in the normal vulnerability management cycle, with faster action for ecommerce sites using multisite or broad Shop Manager access. This is not currently evidenced as mass-exploited, but stored XSS can affect administrative trust and customer-facing operations if privileged accounts are compromised.
Technical view
CVE-2026-1943 is CWE-79 stored XSS caused by insufficient input sanitization and output escaping in YayMail template elements/settings. CVSS is 4.4, requiring network access, high privileges, and high attack complexity. Successful injection executes when a user accesses the affected page. Public references point to TemplateController and template rendering files in version 4.3.2.
Likely exposure
Exposure is limited to WordPress WooCommerce sites running YayMail through version 4.3.2, with multisite enabled or unfiltered_html disabled, and users holding Shop Manager-level access or higher. Single-site installations where unfiltered_html remains available are described as not affected by this issue.
Exploitation context
No active exploitation is indicated in the provided sources, and the CVE is not in KEV. Exploitation requires an authenticated privileged user, reducing broad internet risk. The main concern is malicious insiders, compromised Shop Manager accounts, or role misconfiguration that allows unnecessary access to YayMail template settings.
Researcher notes
Sources identify CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N and CWE-79. The affected range is stated as all versions through 4.3.2. The bundle includes code references and a Trac changeset, but does not clearly name a fixed release version. Avoid assuming exploit availability or patch details beyond those sources.
Mitigation direction
- Inventory WordPress sites using YayMail and identify versions up to 4.3.2.
- Prioritize multisite installations and sites with unfiltered_html disabled.
- Update YayMail beyond 4.3.2 when vendor or WordPress plugin guidance confirms a fixed release.
- Restrict Shop Manager and higher roles to trusted users only.
- Review YayMail template settings for unexpected script-like content.
- Monitor vendor, Wordfence, and WordPress plugin repository guidance for remediation details.
Validation and detection
- Confirm installed YayMail version on each WooCommerce site.
- Check whether the site is WordPress multisite.
- Verify whether unfiltered_html is disabled for relevant users.
- Review users with Shop Manager, Administrator, or equivalent access.
- Inspect YayMail template elements for unauthorized or suspicious saved content.
- Confirm remediation status against vendor or WordPress repository release notes.
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-2026-1943 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
- 4.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:H/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:H/PR:H/UI:N/S:C/C:L/I:L/A:N1.32.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.4MediumVector: CVSS:3.1/AV:N/AC:H/PR:H/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/73b4e5a2-bf75-4df9-a816-2cc858947c39?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/yaymail/tags/4.3.2/src/Controllers/TemplateController.php#L194CVE reference
- https://plugins.trac.wordpress.org/browser/yaymail/tags/4.3.2/templates/elements/text.php#L38CVE reference
- https://plugins.trac.wordpress.org/browser/yaymail/tags/4.3.2/templates/elements/order-details.php#L123CVE reference
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3460087%40yaymail&new=3460087%40yaymail&sfp_email=&sfph_mail=CVE 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.