CVE-2026-48799

Postiz: Unauthenticated arbitrary lifetime PRO grant via Nowpayments webhook

En bref

Sévérité: HIGH 7.7
EPSS: EPSS 0.22 % · centile 12 (2026-10-27)
État: PUBLISHED
Publiée: 2026-07-15
Mise à jour: 2026-07-15
Attribuée par: GitHub_M
Statut NVD: Deferred

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.

Scores

Version	Score	Vecteur	Évalué par
CVSS 3.1	HIGH 7.7	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N	GitHub_M
CVSS 3.1	HIGH 7.7	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N	NVD · security-advisories@github.com (Secondary)

Faiblesses (CWE)

Références européennes

ENISA EUVD · EUVD-2026-44712
GCVE · GCVE-0-2026-48799

Produits affectés

Produit	Versions
gitroomhq · postiz-app	affected < 2.21.8

Références

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD