CVE-2026-75873: Unknown Zella Theme

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

The Zella Theme WordPress theme before 2.6.3 does not perform any capability or nonce check on one of its font upload actions, which is available to unauthenticated users, allowing them to upload arbitrary files, including PHP ones, and achieve remote code execution.

Affected products

• Unknown Zella Theme: before 2.6.3 (fixed in 2.6.3)

Published 2026-09-30. Last modified 2026-09-30.