Security readout for executives and security teams
Plain-English summary
CVE-2024-27993 is a cross-site scripting issue in the WordPress Calendarista Basic Edition plugin through version 3.0.2. An attacker could cause script to run in a user's browser if interaction occurs, potentially affecting site integrity and user trust.
Executive priority
Treat as high priority for any WordPress property using this plugin, especially public sites. First determine whether the plugin exists in the estate; non-users have no indicated exposure from this CVE.
Technical view
The issue is CWE-79 improper input neutralization during web page generation in typps Calendarista Basic Edition, package calendarista-basic-edition, through 3.0.2. CVSS 3.1 is 7.1 high: network reachable, low complexity, no privileges, user interaction required, changed scope, low C/I/A impact.
Likely exposure
Exposure is limited to WordPress sites with Calendarista Basic Edition installed at version 3.0.2 or earlier. The supplied data does not identify affected pages, parameters, or whether default configurations are vulnerable.
Exploitation context
The supplied bundle says KEV is false and provides no cited evidence of active exploitation. Exploitation requires user interaction, so risk depends on attacker ability to get a victim to interact with affected plugin-generated content.
Researcher notes
Evidence names XSS and CVSS but lacks vulnerable parameter details, proof-of-concept status, and fix version. Do not assume exploitation or a specific patch from the supplied sources alone.
Mitigation direction
- Inventory WordPress sites for the calendarista-basic-edition plugin and installed version.
- Check vendor and Patchstack guidance for a patched version or official workaround.
- Disable or remove the plugin where it is not business-critical until remediation is confirmed.
- Apply compensating XSS filtering controls where available and operationally appropriate.
Validation and detection
- Confirm whether Calendarista Basic Edition is installed on each WordPress site.
- Compare installed versions against the affected range: through 3.0.2.
- Identify public pages or workflows using the plugin.
- Review web and WordPress logs for suspicious script-like input around plugin interactions.
- Track CVE, vendor, and Patchstack pages for remediation updates.
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-2024-27993 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
- High
- CVSS
- 7.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/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.
SSVC decision data
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:R/S:C/C:L/I:L/A:L2.83.7PatchstackVulnerability scoring details
Base CVSS 3.1 score
7.1HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://patchstack.com/database/Wordpress/Plugin/calendarista-basic-edition/vulnerability/wordpress-calendarista-basic-edition-plugin-3-0-2-cross-site-scripting-xss-vulnerability?_s_id=cveCVE reference, Patchstack · vdb-entry
- https://patchstack.com/database/vulnerability/calendarista-basic-edition/wordpress-calendarista-basic-edition-plugin-3-0-2-cross-site-scripting-xss-vulnerability?_s_id=cveCVE reference, CVE · vdb-entry, x_transferred
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.