Security readout for executives and security teams
Plain-English summary
CVE-2026-24988 is a stored cross-site scripting issue in the WordPress plugin The Events Calendar Shortcode & Block through version 3.1.1. An authenticated user could store malicious script that runs when another user views affected content. Business risk is moderate because exploitation requires privileges and user interaction, but WordPress admin sessions could be exposed.
Executive priority
Treat as a routine but timely WordPress remediation item. Prioritize public-facing sites, sites with many content contributors, and sites where administrator sessions are frequently active. Escalate if vendor guidance confirms exploitation or if suspicious content changes are observed.
Technical view
The issue is CWE-79 improper neutralization during web page generation in package the-events-calendar-shortcode. CVSS 3.1 is 6.5: AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L. Scope change indicates script execution can affect a different security context. Sources identify stored XSS for versions <= 3.1.1.
Likely exposure
Exposure is limited to WordPress sites running The Events Calendar Shortcode & Block plugin at version 3.1.1 or earlier. Sites allowing low-privileged users to create or edit event shortcode/block content have higher practical risk. Sites without the plugin are not affected.
Exploitation context
The CVE record does not indicate CISA KEV listing, and the provided sources do not document active exploitation. The attack requires a logged-in user and a victim viewing affected generated content. Impact may include session abuse, content modification, or actions performed in the victim’s browser context.
Researcher notes
Evidence is concise: CVE and Patchstack identify stored XSS affecting the plugin through 3.1.1. No exploit steps, active exploitation evidence, or named fixed version are included in the supplied bundle. The affected-version metadata appears sparse, so rely on the narrative version range and vendor guidance.
Mitigation direction
- Inventory WordPress sites for The Events Calendar Shortcode & Block plugin versions <= 3.1.1.
- Check the plugin vendor or Patchstack page for fixed-version guidance.
- Update the plugin if a vendor-supported patched version is available.
- Disable the plugin where it is not business-critical.
- Restrict content editing permissions to trusted users until remediated.
Validation and detection
- Confirm installed plugin version on each WordPress site.
- Review whether untrusted users can create or edit event shortcode/block content.
- Check vendor advisories for a fixed version or official workaround.
- After remediation, verify the plugin version is no longer <= 3.1.1.
- Review web and WordPress logs for suspicious edits to affected 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-2026-24988 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
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/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:L/UI:R/S:C/C:L/I:L/A:L2.33.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
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.