CVE-2020-8771

Name: CVE-2020-8771
Creator: NVD / NIST
Published: 2020-02-06T17:15:14.927+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 46.45%

Last modified Jun 17, 2026

CVE-2020-8771 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The Time Capsule plugin before 1.21.16 for WordPress has an authentication bypass. Any request containing IWP_JSON_PREFIX causes the client to be logged in as the first account on the list of administrator accounts.. EPSS estimates a 46.45% chance of exploitation in the next 30 days.

Description

The Time Capsule plugin before 1.21.16 for WordPress has an authentication bypass. Any request containing IWP_JSON_PREFIX causes the client to be logged in as the first account on the list of administrator accounts.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

46.45%

98.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Wptimecapsule	Wp Time Capsule	< 1.21.16

References

https://wpvulndb.com/vulnerabilities/10010Third Party Advisory
https://www.webarxsecurity.com/vulnerability-infinitewp-client-wp-time-capsule/Exploit, Third Party Advisory
https://wpvulndb.com/vulnerabilities/10010Third Party Advisory
https://www.webarxsecurity.com/vulnerability-infinitewp-client-wp-time-capsule/Exploit, Third Party Advisory

Timeline

Published: Feb 6, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-8771?

How severe is CVE-2020-8771?

CVE-2020-8771 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 46.45% probability of exploitation in the next 30 days.

How do I fix CVE-2020-8771?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-8771?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST