Threat intelligence

PostX <= 5.0.8 - Authenticated (Administrator+) Server-Side Request Forgery via REST API Endpoints

CVE-2026-1273 · ultimate-post

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Ultimate Post at a vulnerable version. How SiteRespond intelligence works

Vulnerability: PostX <= 5.0.8 - Authenticated (Administrator+) Server-Side Request Forgery via REST API Endpoints
Affected software: ultimate-post(Plugin)
Affected versions: ≤ 5.0.8
Authentication: Authenticated (see advisory title)
Vulnerability type: Other
CVE: CVE-2026-1273
Published: 3 March 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: This advisory describes a other issue in the affected software. Review the source advisory and your installed version to assess exposure.
Source: Data imported from Wordfence Intelligence (advisory afe6d4ac-1712-415e-9995-cb7c8fe4e1a0). Methodology and redistribution notes

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