Cyber Resilience

CVE-2025-28939

High

Published: 26 March 2025

Published
26 March 2025
Modified
23 April 2026
KEV Added
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Patch
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CVSS Score v3.1 8.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:L
EPSS Score 0.0005 16.5th percentile
Risk Priority 17 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-28939 is a high-severity SQL Injection (CWE-89) vulnerability. Its CVSS base score is 8.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 16.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 RA-5 (Vulnerability Monitoring and Scanning) and SI-10 (Information Input Validation).

Deeper analysis

CVE-2025-28939 is an improper neutralization of special elements used in an SQL command, classified as a Blind SQL Injection vulnerability (CWE-89), affecting the WP Google Calendar Manager plugin (wp-gcalendar) for WordPress developed by EuroCizia. The issue impacts all versions from n/a through 2.1 inclusive, with a CVSS v3.1 base score of 8.5 (AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:L).

Low-privileged authenticated users can exploit this vulnerability remotely over the network with low attack complexity and no user interaction required. Exploitation enables high confidentiality impact through data exfiltration via blind SQL injection techniques, low availability disruption, and scope change affecting the broader system, while integrity remains unaffected.

Advisories, including the Patchstack database entry at https://patchstack.com/database/Wordpress/Plugin/wp-gcalendar/vulnerability/wordpress-wp-google-calendar-manager-plugin-2-1-sql-injection-vulnerability?_s_id=cve, provide further details on the vulnerability and recommended mitigations.

EU & UK References

Vulnerability details

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in EuroCizia WP Google Calendar Manager wp-gcalendar allows Blind SQL Injection.This issue affects WP Google Calendar Manager: from n/a through <= 2.1.

CWE(s)
CWE-89

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

Blind SQL injection in public-facing WordPress plugin directly enables exploitation of the web application for data exfiltration.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2026-39334Shared CWE-89
CVE-2024-13488Shared CWE-89
CVE-2026-20002Shared CWE-89
CVE-2025-1446Shared CWE-89
CVE-2025-22699Shared CWE-89
CVE-2026-36232Shared CWE-89
CVE-2026-31871Shared CWE-89
CVE-2026-33078Shared CWE-89
CVE-2026-46359Shared CWE-89
CVE-2025-22691Shared CWE-89

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match
prevent

Directly prevents blind SQL injection by requiring validation and sanitization of untrusted inputs used in SQL commands within the WP Google Calendar Manager plugin.

SI-2 Flaw Remediation good match
prevent

Addresses the specific flaw in WP Google Calendar Manager versions through 2.1 by mandating timely identification, reporting, and patching of the SQL injection vulnerability.

RA-5 Vulnerability Monitoring and Scanning good match
detect

Enables proactive detection of CVE-2025-28939 through regular vulnerability scanning of the WordPress plugin, facilitating remediation before exploitation.

References