Security readout for executives and security teams
Plain-English summary
This CVE affects the Calendar Event Multi View WordPress plugin before 1.4.01. Unsafely handled URL parameters could be reflected into a page, allowing cross-site scripting if a user visits a maliciously crafted link. The source bundle does not show active exploitation or a CVSS score.
Executive priority
Treat this as a targeted web application hygiene issue. Prioritize internet-facing WordPress sites and any environment where administrators may browse authenticated sessions. It is not KEV-listed in the provided bundle.
Technical view
The plugin fails to sanitize or escape the start and end GET parameters before outputting them through php/edit.php. This is CWE-79 reflected XSS and is unauthenticated. The available source identifies affected versions as before 1.4.01, with incomplete severity metadata.
Likely exposure
Exposure is likely limited to WordPress sites running Calendar Event Multi View before 1.4.01, especially public sites exposing plugin calendar views or edit-related pages.
Exploitation context
The bundle indicates unauthenticated reflected XSS, but not active exploitation. Successful abuse would generally depend on a victim opening a crafted URL and the vulnerable page reflecting attacker-controlled input.
Researcher notes
Evidence is concise and source-limited. The CVE description and title identify versions before 1.4.01, php/edit.php, and the start/end parameters. No CVSS vector, exploit-in-the-wild evidence, or detailed vendor advisory is provided in the bundle.
Mitigation direction
- Inventory WordPress sites for Calendar Event Multi View plugin usage.
- Upgrade affected installations to 1.4.01 or later if available.
- Disable or remove the plugin if it cannot be updated.
- Check WPScan or vendor guidance for current remediation details.
- Review WordPress hardening controls for admin session protection.
Validation and detection
- Confirm the installed plugin version on each WordPress site.
- Check whether exposed pages accept start and end parameters.
- Review rendered output for unsafe reflection using harmless test markers.
- Search web logs for unusual requests containing start or end parameters.
- Verify updated sites no longer expose unescaped parameter output.
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-2021-24498 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://wpscan.com/vulnerability/3c5a5187-42b3-4f88-9b0e-4fdfa1c39e86CVE reference · x_refsource_MISC
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.