CVE-2026-16257: Arvow AI SEO Writer (WordPress plugin) · Improper Authentication
Affects Arvow AI SEO Writer (WordPress plugin)Source CVE Database V5
Not known to be exploited · CVSS 8.2 High : upgrade to 1.5.4 soon.
Data as of 8 Nov 2026, 23:24 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 29% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 1.5.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 10 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 8 Nov 2026.
What to do
Upgrade Arvow AI SEO Writer (WordPress plugin) to 1.5.4.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Arvow AI SEO Writer | Affected
| Fixed in
|
AI-suggested
If you cannot patch yet, restricting access to the affected REST endpoint through additional access controls or disabling the plugin if not in use may reduce risk.
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.