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Vulnerability record · CVE-2026-16257 · published 10 August 2026

CVE-2026-16257: Improper authentication vulnerability

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.

8.2 CVSS 3.1 High EPSS 0.36% · top 72.8% CWE-287 · Improper authentication Deferred
8.2CVSS 3.1 base score
0.36%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
26 Aug 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

References

LinkTags
https://wpscan.com/vulnerability/89c32854-1cf1-4fe9-a6d0-6244be2dcc03/

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Source: NIST National Vulnerability Database (record CVE-2026-16257), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.