PT-2026-50122 · Gitroomhq · Postiz-App

Nedu-M · Published 2026-06-16 · Updated 2026-06-17 · CVE-2026-48783

NVD

CVSS v3.1

4.8

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L

Postiz is an AI social media scheduling tool. Versions prior to 2.21.8 contained an unauthenticated endpoint that accepted a signed token and applied subscription-enforcement side effects to the organization referenced in that token's claims, without verifying the token's intended purpose. The endpoint, /public/modify-subscription, could not change the persisted subscription tier, but it did execute enforcement-related side effects on the caller's own organization, including adjusting team-member enablement state, disabling integrations exceeding the asserted plan's limits, and resetting the scheduled-post cron when the asserted plan was the free tier. Impact is limited to the attacker's own organization and cannot be redirected at other tenants through this endpoint. This issue has been fixed in version 2.21.8.

Fix

Insufficient Verification of Data Authenticity

Missing Authorization

IDOR

Weakness Enumeration

CWE-345

CWE-862

CWE-749

CWE-639

Related Identifiers

CVE-2026-48783

Affected Products

Postiz-App

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-48783 · Security Note
• https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-v4wr-4j8g-4hfj · Note
• https://github.com/gitroomhq/postiz-app/commit/23696d2973510ae1f3f48bfa41a6bfbbf9827b05 · Note
• https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.8 · Note
• https://gadvisory.org/advisories/PSA-2026-WWFR8X · Note
• https://t.me/CVEtracker/57046 · Telegram Post