Quick answers
- Is CVE-2026-14900 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-14900 being exploited in the wild.
- How severe is CVE-2026-14900?
- Critical severity, with a CVSS score of 9.8, published 29 July 2026.
- Which products and versions are affected?
- StylemixThemes Cost Calculator Builder PRO 0 - 4.0.3.
- Is there a fix for CVE-2026-14900?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-14900 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-14900?
- Check whether you run StylemixThemes Cost Calculator Builder PRO at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A Remote Code Execution (RCE) vulnerability exists in the Cost Calculator Builder PRO plugin for WordPress (versions up to 4.0.3) within the js_to_php() function. The root cause is the insufficient sanitization of the 'orderDetails[*].originalValue' field, which is injected directly into a formula string passed to the PHP eval() function. While the evaluateFormula() function employs a regex allow-list, it only filters alphanumeric tokens, allowing non-word punctuation characters to remain. Attackers can bypass these restrictions using non-word XOR gadgets. Although a nonce check is present, the required nonce is publicly accessible via the wp_head hook, allowing unauthenticated attackers to achieve full code execution.
Affected products
- StylemixThemes Cost Calculator Builder PRO 0 - 4.0.3
Timeline
- 2026-07-29: disclosed: Vulnerability published by Wordfence and NVD