CVE-2020-37255

WordPress Time Capsule Plugin 1.21.16 Authentication Bypass

Published Jun 20, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:wptimecapsule:wp_time_capsule:*:*:*:*:*:wordpress:*:*
Type Values Removed Values Added
First Time appeared Wordpress
Wordpress wordpress
Wptimecapsule
Wptimecapsule wp Time Capsule
Vendors & Products Wordpress
Wordpress wordpress
Wptimecapsule
Wptimecapsule wp Time Capsule
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title WordPress Time Capsule Plugin 1.21.16 Authentication Bypass
Weaknesses CWE-288
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Jul 15, 2026, 1:24 AM
Reserved
Jun 20, 2026, 1:28 PM
Status
Deferred
Published
Jun 20, 2026, 2:16 PM
Modified
Sep 29, 2026, 9:10 AM