CVE-2020-37255
WordPress Time Capsule Plugin 1.21.16 Authentication Bypass
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.
INFO
Published Date :
June 20, 2026, 2:16 p.m.
Last Modified :
June 23, 2026, 4:17 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update the Time Capsule plugin to the latest version.
- Remove the vulnerable plugin if no update is available.
- Restrict access to the plugin's endpoints.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-37255.
| URL | Resource |
|---|---|
| https://wptimecapsule.com/ | |
| https://www.exploit-db.com/exploits/47941 | |
| https://www.vulncheck.com/advisories/wordpress-time-capsule-plugin-authentication-bypass |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-37255 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-37255
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-37255 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-37255 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 23, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2020-37255', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-23T02:29:14.249213Z'} -
CVE Modified by [email protected]
Jun. 21, 2026
Action Type Old Value New Value Changed Affected [{'vendor': 'Wptimecapsule', 'product': 'Time Capsule Plugin', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.21.16', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}] [{'vendor': 'Wptimecapsule', 'product': 'Time Capsule Plugin', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '1.21.16'}], 'defaultStatus': 'unaffected'}] -
New CVE Received by [email protected]
Jun. 20, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Wptimecapsule', 'product': 'Time Capsule Plugin', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.21.16', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}] 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Added CWE CWE-288 Added Reference https://wptimecapsule.com/ Added Reference https://www.exploit-db.com/exploits/47941 Added Reference https://www.vulncheck.com/advisories/wordpress-time-capsule-plugin-authentication-bypass