CVE-2026-16257: CWE-287 Improper Authentication in Arvow AI SEO Writer
The Arvow AI SEO Writer WordPress plugin before 1.5.4 does not properly restrict access to one of its REST endpoints, whose only access control can be bypassed by unauthenticated users through type juggling when the Arvow AI SEO Writer WordPress plugin before 1.5.4 has not been configured, allowing them to create arbitrary posts and pages and to disclose author account and taxonomy information.
AI Analysis
Technical Summary
The Arvow AI SEO Writer WordPress plugin before version 1.5.4 contains an improper authentication vulnerability (CWE-287) in one of its REST endpoints. The access control mechanism can be bypassed by unauthenticated users exploiting type juggling when the plugin is unconfigured. This flaw permits attackers to create arbitrary posts and pages and to access sensitive author and taxonomy data. No CVSS score or vendor advisory is available, and no patch or remediation information has been provided.
Potential Impact
Successful exploitation allows unauthenticated attackers to bypass access controls on a REST endpoint, leading to unauthorized creation of posts and pages and disclosure of author account and taxonomy information. This could result in content manipulation and information leakage within affected WordPress sites using the vulnerable plugin.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the REST endpoints of the Arvow AI SEO Writer plugin and consider disabling or removing the plugin if it is not configured or in use.
CVE-2026-16257: CWE-287 Improper Authentication in Arvow AI SEO Writer
Description
The Arvow AI SEO Writer WordPress plugin before 1.5.4 does not properly restrict access to one of its REST endpoints, whose only access control can be bypassed by unauthenticated users through type juggling when the Arvow AI SEO Writer WordPress plugin before 1.5.4 has not been configured, allowing them to create arbitrary posts and pages and to disclose author account and taxonomy information.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Arvow AI SEO Writer WordPress plugin before version 1.5.4 contains an improper authentication vulnerability (CWE-287) in one of its REST endpoints. The access control mechanism can be bypassed by unauthenticated users exploiting type juggling when the plugin is unconfigured. This flaw permits attackers to create arbitrary posts and pages and to access sensitive author and taxonomy data. No CVSS score or vendor advisory is available, and no patch or remediation information has been provided.
Potential Impact
Successful exploitation allows unauthenticated attackers to bypass access controls on a REST endpoint, leading to unauthorized creation of posts and pages and disclosure of author account and taxonomy information. This could result in content manipulation and information leakage within affected WordPress sites using the vulnerable plugin.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the REST endpoints of the Arvow AI SEO Writer plugin and consider disabling or removing the plugin if it is not configured or in use.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-07-20T08:27:04.142Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7972acbf8831d5392fafba
Added to database: 08/10/2026, 06:41:48 UTC
Last enriched: 08/10/2026, 07:18:18 UTC
Last updated: 08/11/2026, 00:41:10 UTC
Views: 5
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