Security readout for executives and security teams
Plain-English summary
CVE-2026-1310 affects the WordPress Simple calendar for Elementor plugin through version 1.6.6. A website visitor may be able to delete calendar entries without logging in if they have a valid nonce and entry ID. The impact is data integrity loss, not data theft or site takeover based on current sources.
Executive priority
Handle in the normal vulnerability remediation cycle unless the calendar supports critical operations. Prioritize faster action for public websites where deleted events would disrupt customers, staff scheduling, bookings, or public communications.
Technical view
The issue is CWE-862, missing authorization, in the miga_ajax_editor_cal_delete function exposed through the miga_editor_cal_delete AJAX action for authenticated and unauthenticated users. CVSS is 5.3: network exploitable, low complexity, no privileges or user interaction, with low integrity impact only.
Likely exposure
Exposure is limited to WordPress sites running Simple calendar for Elementor version 1.6.6 or earlier. Sites using the plugin for public-facing calendars are the most relevant because the vulnerable AJAX path is reachable without authentication.
Exploitation context
The CVE says exploitation requires a valid nonce and calendar entry ID. The source bundle does not show CISA KEV listing or confirmed active exploitation. Treat this as a practical integrity risk, especially where calendar entries drive operations, bookings, or public communications.
Researcher notes
Evidence supports a missing capability check in plugin backend code and unauthenticated AJAX exposure. The provided CVE metadata and title identify versions through 1.6.6, but the bundle does not clearly name a fixed version. No active exploitation evidence is provided.
Mitigation direction
- Inventory WordPress sites for Simple calendar for Elementor installations and versions.
- Update the plugin if vendor guidance identifies a fixed release.
- If no fixed release is available, disable or remove the plugin where business impact allows.
- Limit public exposure of affected sites using existing access controls where feasible.
- Back up calendar content before remediation and retain recovery copies.
Validation and detection
- Confirm whether Simple calendar for Elementor is installed on each WordPress site.
- Verify plugin version; prioritize versions 1.6.6 and earlier.
- Review web logs for unexpected miga_editor_cal_delete AJAX activity.
- Check calendar entries for unexplained deletions or gaps.
- Monitor Wordfence and WordPress plugin sources for fixed-version guidance.
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-862: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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-2026-1310 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
- 5.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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:U/C:N/I:L/A:N3.91.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/e537c56d-7c5e-4f21-b266-ef3d1a87caf2?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/simple-calendar-for-elementor/trunk/widget/includes/backend_functions.php#L3CVE reference
- https://plugins.trac.wordpress.org/browser/simple-calendar-for-elementor/tags/1.6.6/widget/includes/backend_functions.php#L3CVE reference
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3444617%40simple-calendar-for-elementor&new=3444617%40simple-calendar-for-elementor&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.
Missing Authorization
Missing Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.