CVE-2026-16257
Arvow AI SEO Writer < 1.5.4 - Unauthenticated Arbitrary Post Creation via Webhook Secret Type-Juggling
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.
INFO
Published Date :
Aug. 10, 2026, 7:16 a.m.
Last Modified :
Aug. 10, 2026, 7:16 a.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-16257
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update the Arvow AI SEO Writer plugin to version 1.5.4 or later.
- Configure plugin access controls properly.
- Review and restrict REST API endpoint access.
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-2026-16257.
| URL | Resource |
|---|---|
| https://wpscan.com/vulnerability/89c32854-1cf1-4fe9-a6d0-6244be2dcc03/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-16257 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-2026-16257
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-2026-16257 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-16257 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.
-
New CVE Received by [email protected]
Aug. 10, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Unknown', 'product': 'Arvow AI SEO Writer', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.5.4', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}] Added 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. Added Reference https://wpscan.com/vulnerability/89c32854-1cf1-4fe9-a6d0-6244be2dcc03/