High 7.7Published Jul 15, 2026

CVE-2026-48799Postiz: Unauthenticated arbitrary lifetime PRO grant via Nowpayments webhook

Updated under an hour ago (Oct 26, 2026, 3:10 AM ET)

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Every CVE for gitroomhq postiz-app

Exploited in the last 30 days

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.

CVSS: 7.7 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Weakness (CWE): CWE-345, CWE-639
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Jul 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

gitroomhq postiz-app gitroomhq:postiz_app (from the name)	before 2.21.8	CNA record

References

https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-j7rp-5mgj-qgg9x-refsource-confirm
https://github.com/gitroomhq/postiz-app/commit/23696d2973510ae1f3f48bfa41a6bfbbf9827b05x-refsource-misc
https://gadvisory.org/advisories/PSA-2026-Q3TCPKx-refsource-misc
https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.8x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.