Unauthenticated SQL Injection in WordPress Booking Plugin

VikAppointments Service Booking Calendar wordpress plugin is vulnerable to unauthenticated SQL injection due to one of the parameters that controls how the public reviews list is sorted is taken from the incoming request and used to build a database query without proper validation or sanitization. Because this value is placed directly into the query, an attacker who is not logged in can inject arbitrary SQL through a normal booking page and read data from the site's database — including sensitive information such as WordPress user credentials. No authentication or special privileges are required

Casky was already ahead

This CVE exploits attack patterns that Casky's 322matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.

Analysis

VikAppointments Service Booking Calendar contains a critical SQL injection vulnerability in its public reviews sorting functionality. An unauthenticated attacker can manipulate the sort parameter on the booking page to inject arbitrary SQL commands, bypassing all authentication requirements. This vulnerability affects any WordPress site running the plugin, exposing sensitive database contents including user credentials, personal information, and business data to unauthorized access. With a CVSS score of 7.5, this represents a high-severity risk requiring immediate patching across all affected installations.

Casky's 322 mapped skills leverage Claude AI with extended reasoning to detect the attack patterns associated with this vulnerability across MITRE ATT&CK reconnaissance (TA0001) and exfiltration (TA0043) techniques. Practitioners using Casky would identify suspicious patterns through detection of: unauthenticated parameter manipulation in booking requests, anomalous SQL syntax in query logs, database queries containing UNION SELECT or boolean-based injection payloads, and unusual data extraction patterns from customer or user tables. The platform's skill mapping would correlate these indicators with CWE-89 (SQL injection) exploitation attempts, flagging sorting parameters as high-risk input vectors and alerting practitioners to the specific booking page endpoints vulnerable to this attack vector.

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Casky Risk Score

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EPSS Probability

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Shodan Exposure

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GreyNoise Signal

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Composite risk scoring from EPSS, CISA KEV, Shodan, and GreyNoise — 21 security APIs correlated into a single Casky Risk Score. Coming in Casky Pro. Join early access →

322 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-15918.

Abuse of Public-Facing API: Mobile API Abuse

mobile security · low

Run

abusing-dpapi-for-credential-access

red teaming · high

Run

abusing-shadow-credentials-for-privesc

red teaming · high

Run

MITRE ATT&CK Techniques

TA0001 TA0043

Investigate the attack patterns behind CVE-2026-15918

Casky has 322 skills that investigate the attack patterns behind CVE-2026-15918. Run one and get CVSS-scored findings in 3 minutes.

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