VULNERABILITY INTELLIGENCE
CVE-2026-48799
CVSS score7.7 HIGH
EPSS probability0.22%
CISA KEVNot currently listed
Published2026-07-15
Last modified2026-10-24
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Description
Postiz is an AI social media scheduling tool. Prior to 2.21.8, Postiz fails to verify Nowpayments IPN callback authenticity against the payment provider shared secret and reads the target subscription identifier from the untrusted request body, allowing a low-privileged account to grant arbitrary organizations lifetime PRO subscriptions without payment. This issue is fixed in version 2.21.8.
Weakness classification
- CWE-345: Insufficient Verification of Data Authenticity
- CWE-639: Authorization Bypass Through User-Controlled Key