Vulnerability in Wptimecapsule Time Capsule Plugin
CVE-2020-37255
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (48.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Wptimecapsule Time Capsule Plugin — versions 0
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/47941 (exploit)
- wptimecapsule.com/ (product)
- www.vulncheck.com/advisories/wordpress-time-capsule-plugin-authentication-bypass (third-party-advisory)
Frequently asked questions
- What is CVE-2020-37255?
- CVE-2020-37255 is a high-severity vulnerability in Wptimecapsule Time Capsule Plugin, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 7.5/10. Published 2026-06-20.
- How severe is CVE-2020-37255?
- High severity. CVSS v3 base score is 7.5 out of 10.