CVE-2026-14900

The Cost Calculator Builder PRO plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 4.0.3 via the js_to_php function. This is due to insufficient sanitization of the orderDetails[*].originalValue field, which is injected verbatim into a calculator formula string passed to PHP eval() inside js_to_php(), with the regex allow-list in evaluateFormula() only filtering alphanumeric tokens and leaving non-word punctuation characters intact. This makes it possible for unauthenticated attackers to execute code on the server. The only authentication barrier is a nonce check, but the required nonce is publicly emitted on every front-end page via the wp_head hook, making it freely obtainable by unauthenticated visitors. Payloads must be non-word XOR gadgets to bypass sanitization.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://stylemixthemes.com/cost-calculator-plugin/
https://www.wordfence.com/threat-intel/vulnerabilities/id/4c8f2872-06ff-41a2-b601-77a47470de0c?source=cve

Configurations

No configuration.

History

29 Jul 2026, 11:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-29 11:16

Updated : 2026-07-30 14:01

NVD link : CVE-2026-14900

Mitre link : CVE-2026-14900

CVE.ORG link : CVE-2026-14900

JSON object : View

Products Affected

No product.

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

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