Known vulnerabilities in WP-LESS

Implementation of LESS (Leaner CSS) in order to make themes development easier.

1Reported vulnerabilities

5.3Highest CVSS score

1.9.8Latest version

10,000+Active installs

What to do now

Update WP-LESS to 1.9.7 or later. 1 of these have a fixed version available. Updating resolves them.

Plugin last updated: May 14, 2025 / Tested up to WordPress: 5.8.15 / View on wordpress.org

Reported vulnerabilities

Ordered by how urgently they need attention — whether a vulnerability is actually being exploited, and how likely exploitation is, rather than CVSS severity alone.

CVE	Severity	Exploit probability next 30 days	Affected versions	Fixed in	Published
CVE-2025-31550	Medium 5.3	0.4%	1.9.6 and earlier	`1.9.7`	April 1, 2025

Sources: vulnerability records from NVD, exploitation from CISA KEV, exploit probability from EPSS. Affected versions come from CPE ranges or from the reporting CNA.