CVE-2026-14487: Path Traversal (CVSS 9.1)

Description

The Simple Coherent Form plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the removeUploadDir function in all versions up to, and including, 2.4.13. This makes it possible for unauthenticated attackers to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). The scf_get_id_upload endpoint freely issues a valid scf_upload_file_removal nonce to any unauthenticated visitor, and the removal endpoint's secondary hash check is forgeable offline because it relies on a hardcoded salt embedded in the plugin source, meaning neither control presents a real authorization boundary.

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CVSS v3.1 Score

9.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

EPSS — Exploit Prediction

0.0074

Probability of exploitation

0.51%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-22 Path Traversal

References

Other References

https://plugins.trac.wordpress.org/browser/simple-coherent-form/tags/2.4.13/includes/fields/file.php#L1387 https://plugins.trac.wordpress.org/browser/simple-coherent-form/tags/2.4.13/includes/fields/file.php#L1494 https://plugins.trac.wordpress.org/browser/simple-coherent-form/tags/2.4.13/includes/fields/file.php#L1521 https://plugins.trac.wordpress.org/browser/simple-coherent-form/tags/2.4.13/includes/fields/file.php#L1544 https://plugins.trac.wordpress.org/browser/simple-coherent-form/tags/2.4.13/includes/fields/file.php#L43 https://www.wordfence.com/threat-intel/vulnerabilities/id/f4831e75-dc0e-4d6f-b2cb-8498d8629319?source=cve

Frequently Asked Questions

What is CVE-2026-14487? +

The Simple Coherent Form plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the removeUploadDir function in all versions up to, and including, 2.4.13. This makes it possible for unauthenticated attackers to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). The scf_get_id_upload endpoint freely issues a valid scf_upload_file_removal nonce to any unauthenticated visitor, and the removal endpoint's secondary hash check is forgeable offline because it relies on a hardcoded salt embedded in the plugin source, meaning neither control presents a real authorization boundary. It has a CVSS v3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2026-14487? +

CVE-2026-14487 has a CVSS v3.1 score of 9.1 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0074, placing it in the 1th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-14487? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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