CVE-2020-37255: Wptimecapsule Time Capsule Plugin

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

WordPress Time Capsule Plugin 1.21.16 contains an authentication bypass vulnerability that allows unauthenticated attackers to gain administrative access by sending a crafted POST request with the IWP_JSON_PREFIX header. Attackers can exploit this flaw to obtain valid administrator session cookies and access the WordPress dashboard without providing credentials.

Affected products

• Wptimecapsule Time Capsule Plugin: up to and including 1.21.16

Published 2026-06-20. Last modified 2026-09-29.