Security readout for executives and security teams
Plain-English summary
CVE-2026-1922 affects a WordPress events plugin. A logged-in user with Contributor-level access or higher could store malicious script in event shortcode content. That script may run for visitors who view the affected page. This is a moderate business risk for sites that allow untrusted or many internal users to create WordPress content.
Executive priority
Treat as a timely but not emergency remediation item. Prioritize public WordPress sites with many content contributors, customer-facing traffic, or weak account governance. There is no provided evidence of active exploitation, but stored XSS can affect users and site trust.
Technical view
The Events Calendar Shortcode & Block versions up to and including 3.1.2 are reported vulnerable to stored XSS in the `ecs-list-events` shortcode `message` attribute. The cause is insufficient sanitization and output escaping of shortcode attributes. CVSS is 6.4, CWE-79, with low privileges required and changed scope.
Likely exposure
Exposure is likely limited to WordPress sites running this plugin at version 3.1.2 or earlier, especially where Contributor or higher accounts are broadly assigned. Sites without the plugin, without affected versions, or without untrusted content authors have lower exposure.
Exploitation context
The attacker needs authenticated WordPress access at Contributor level or higher. The payload is stored in page content and executes when users access the injected page. The source bundle does not report known active exploitation, and CISA KEV status is false.
Researcher notes
Public data attributes the flaw to shortcode attribute handling at the referenced plugin code location and a WordPress Trac changeset. The bundle does not provide exploit-in-the-wild evidence or a clearly named fixed version. Validate using version checks and safe content review rather than active exploitation testing.
Mitigation direction
- Identify WordPress sites using The Events Calendar Shortcode & Block plugin.
- Check whether installed versions are 3.1.2 or earlier.
- Update according to the plugin or WordPress.org guidance when available.
- Restrict Contributor and higher roles to trusted users only.
- Review pages and posts containing the affected shortcode attribute.
- Remove or disable suspicious shortcode content pending remediation.
Validation and detection
- Inventory WordPress plugins across production and staging sites.
- Confirm the installed plugin version from WordPress administration or asset inventory.
- Review content using `ecs-list-events` with the `message` attribute.
- Check recent edits by Contributor, Author, Editor, and Administrator accounts.
- Verify remediation against vendor or WordPress.org plugin guidance.
- Monitor for unexpected script execution reports on affected pages.
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-2026-1922 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
- 6.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/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:L/UI:N/S:C/C:L/I:L/A:N3.12.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/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/bb302539-97e7-4b2c-865d-bd81919647ae?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/the-events-calendar-shortcode/tags/3.1.1/the-events-calendar-shortcode.php#L486CVE reference
- https://plugins.trac.wordpress.org/browser/the-events-calendar-shortcode/trunk/the-events-calendar-shortcode.php#L486CVE reference
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3454586%40the-events-calendar-shortcode&old=3448663%40the-events-calendar-shortcode&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.