Security readout for executives and security teams
Plain-English summary
This is a stored cross-site scripting flaw in the WordPress Next Event Calendar plugin through version 1.2. A highly privileged user could save malicious content that later runs in another user’s browser. Business impact is moderate because exploitation needs privileges and user interaction, but affected sites should still be reviewed.
Executive priority
Treat this as a normal vulnerability-management item, not an emergency. Prioritize sites where many users access calendar content or where plugin administration is shared broadly. Escalate if internal review finds suspicious stored content or privileged account compromise.
Technical view
CVE-2023-26001 is CWE-79 stored XSS in Marchetti Design Next Event Calendar for WordPress, affecting versions through 1.2. The CVSS 3.1 score is 5.9 with AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L. Sources do not identify a fixed version or confirmed exploitation.
Likely exposure
Exposure is limited to WordPress installations using the Marchetti Design Next Event Calendar plugin, package name next-event-calendar, at version 1.2 or earlier. The source bundle provides no CPEs and no broader affected product list.
Exploitation context
The CVSS vector indicates network reachability, low attack complexity, high privileges required, and user interaction required. The issue is stored XSS, so malicious content must be saved and later viewed. CISA KEV status is false, and the supplied sources do not report active exploitation.
Researcher notes
Evidence is limited but consistent: CVE and Patchstack describe stored XSS through version 1.2. The source bundle does not name a patch, fixed version, exploit proof, or affected code path. Avoid assuming exploitation beyond the stated CVSS conditions.
Mitigation direction
- Inventory WordPress sites for the next-event-calendar plugin and identify versions at or below 1.2.
- Check vendor and Patchstack guidance for any fixed release or official workaround.
- Disable or remove the plugin where it is unused or business-nonessential.
- Restrict administrative access to trusted users until remediation is confirmed.
Validation and detection
- Confirm whether the plugin slug next-event-calendar is installed on each WordPress site.
- Record installed plugin versions and flag version 1.2 or earlier.
- Review event content for unexpected script-like markup or unauthorized changes.
- Verify remediation status against vendor or Patchstack 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-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-2023-26001 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
- 5.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/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:H/UI:R/S:C/C:L/I:L/A:L1.73.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.9MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L
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.