Security readout for executives and security teams
Plain-English summary
This vulnerability affects the WordPress WP Calendar plugin up to version 1.5.3. An authenticated user could store script content that later runs in another user’s browser. Business risk is usually account/session exposure or content tampering on affected WordPress sites, not server takeover based on the provided CVSS data.
Executive priority
Treat this as a moderate-priority web application issue. Prioritize internet-facing WordPress sites and sites with many content contributors. It is less urgent than unauthenticated remote code execution, but stored XSS can still affect administrators or users who view poisoned calendar content.
Technical view
CVE-2022-45814 is a stored cross-site scripting issue in Fabian von Allmen WP Calendar plugin <= 1.5.3, mapped to CWE-79. CVSS 3.1 is 5.4 with network access, low complexity, low privileges, required user interaction, changed scope, low confidentiality and integrity impact, and no availability impact.
Likely exposure
Exposure is limited to WordPress sites running the WP Calendar plugin at version 1.5.3 or earlier. The CVE data does not identify specific vulnerable roles, affected fields, or a confirmed fixed version.
Exploitation context
The provided bundle does not show CISA KEV listing or other evidence of active exploitation. The CVSS vector indicates exploitation requires a logged-in user with low privileges and a victim interaction with stored content.
Researcher notes
The source bundle is thin: it confirms stored XSS, affected plugin/version boundary, CWE-79, and CVSS. It does not provide root-cause details, affected parameters, exploit maturity, or a fixed version. Avoid assuming exploitability beyond the authenticated stored-XSS model described.
Mitigation direction
- Inventory WordPress sites for the WP Calendar plugin and version.
- Check vendor or Patchstack guidance for a fixed release before upgrading.
- Disable or remove the plugin if no trusted fixed version is available.
- Restrict plugin management and content permissions to trusted users only.
- Review affected sites for unexpected scripts or unauthorized calendar content.
Validation and detection
- Confirm whether WP Calendar is installed on each WordPress site.
- Record the installed plugin version and compare it with <= 1.5.3.
- Review WordPress roles allowed to create or edit calendar content.
- Check site content for unexpected embedded scripts or suspicious HTML.
- Monitor vendor, CVE, and Patchstack pages for updated remediation details.
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-2022-45814 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
- 5.4 (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: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:R/S:C/C:L/I:L/A:N2.32.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
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.