Arvow AI SEO Writer Plugin up to 1.5.3 on WordPress REST Endpoint improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k2.28+

Summaryinfo

A vulnerability classified as critical has been found in Arvow AI SEO Writer Plugin up to 1.5.3. The impacted element is an unknown function of the component REST Endpoint. This manipulation causes improper authentication. This vulnerability is registered as CVE-2026-16257. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Arvow AI SEO Writer Plugin up to 1.5.3. It has been declared as critical. Affected by this vulnerability is some unknown processing of the component REST Endpoint. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at wpscan.com. This vulnerability is known as CVE-2026-16257 since 07/20/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 1.5.4 eliminates this vulnerability.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: AI SEO Writer Plugin 1.5.4

Timelineinfo

07/20/2026 CVE reserved
08/10/2026 +21 days Advisory disclosed
08/10/2026 +0 days VulDB entry created
08/10/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: wpscan.com
Status: Confirmed

CVE: CVE-2026-16257 (🔒)
GCVE (CVE): GCVE-0-2026-16257
GCVE (VulDB): GCVE-100-387295

Entryinfo

Created: 08/10/2026 08:58
Changes: 08/10/2026 08:58 (56)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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