Arvow AI SEO Writer < 1.5.4 - Unauthenticated Arbitrary Post Creation via Webhook Secret Type-Juggling
Priority MEDIUM 42CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-287.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0036 29th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Arvow AI SEO Writer (Unknown): 1.5.4
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | Arvow AI SEO Writer | before 1.5.4 | 1.5.4 | Patch available | CNA |
- Arvow AI SEO Writer VendorUnknown Affected before 1.5.4 Fixed in 1.5.4 Patch available CNA
Remediation
- Fix · CNA Arvow AI SEO Writer (Unknown) Fixed in 1.5.4
Timeline
- 2026-10-02 Threatist record created from CVE-2026-16257
- 2026-10-03 Alias added: GHSA-qhv8-f57q-hvv7
References
Sources
- CVE-2026-16257 · CVE Program
- CVE-2026-16257 · NVD
- FIRST EPSS
- GHSA-qhv8-f57q-hvv7 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences