Cyber Resilience

CVE-2023-6360

HighPublic PoC

Published: 30 November 2023

Published
30 November 2023
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
EPSS Score 0.8806 99.5th percentile
Risk Priority 70 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-6360 is a high-severity SQL Injection (CWE-89) vulnerability in Joedolson My Calendar. Its CVSS base score is 8.6 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 0.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

Deeper analysis

The My Calendar WordPress plugin prior to version 3.4.22 contains an unauthenticated SQL injection vulnerability (CWE-89) in the 'from' and 'to' parameters of the /my-calendar/v1/events REST route. The flaw carries a CVSS 3.1 score of 8.6 with a network attack vector, low complexity, no required privileges or user interaction, and a changed scope that yields high confidentiality impact while leaving integrity and availability unaffected.

An unauthenticated attacker with network access can supply crafted values to the affected parameters and extract sensitive data from the underlying database. Because the endpoint is reachable through the WordPress REST API without authentication, exploitation can be performed remotely by any party able to reach the site.

The Tenable advisory linked to the CVE recommends upgrading the plugin to version 3.4.22 or later to eliminate the vulnerable code paths. The associated EPSS score has remained elevated near 0.88 since disclosure, indicating sustained exploitation interest.

EU & UK References

Vulnerability details

The 'My Calendar' WordPress Plugin, version < 3.4.22 is affected by an unauthenticated SQL injection vulnerability in the 'from' and 'to' parameters in the '/my-calendar/v1/events' rest route.

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 →
T1213.006 Databases Collection
Adversaries may leverage databases to mine valuable information.
attack.mitre.org →
Why these techniques?

Unauthenticated SQL injection in public-facing WordPress REST endpoint enables exploitation of public-facing application (T1190) and facilitates collection of data from backend database (T1213.006).

Affected Assets

joedolson
my calendar
≤ 3.4.22

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

CA-8 Penetration Testing
addresses: CWE-89

Penetration testing uses SQL injection payloads against database interfaces, identifying and supporting fixes for SQL injection weaknesses.

SI-10 Information Input Validation
addresses: CWE-89

Validates query inputs to prevent SQL syntax or command manipulation.

References