Is CVE-2026-48781 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-48781 being exploited in the wild.

How severe is CVE-2026-48781?

Critical severity, with a CVSS score of 9.9, published 17 June 2026.

Is there a fix for CVE-2026-48781?

A patch was published on 2026-05-22T12:16:00Z: Fix developed and verified. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-48781 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-48781?

Check whether you run Gitroom Postiz at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-48781: Postiz privilege escalation via JWT forgery in Skool integration

CVE-2026-48781 · Severity: critical · CVSS 9.9 · Published 2026-06-17

Postiz, an AI-powered social media scheduling tool, contained a critical flaw in its Skool integration component. An attacker with a standard user account could manipulate the system into granting them 'Super Admin' privileges. This would allow the attacker to take full control of the platform, access other users' data, and post content to social media accounts linked to the service.

Technologies: Gitroom Postiz. Vendors: Gitroom.

Quick answers

Is CVE-2026-48781 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-48781 being exploited in the wild.
How severe is CVE-2026-48781?: Critical severity, with a CVSS score of 9.9, published 17 June 2026.
Which products and versions are affected?: Gitroom Postiz < 2.21.8.
Is there a fix for CVE-2026-48781?: A patch was published on 2026-05-22T12:16:00Z: Fix developed and verified. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-48781 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-48781?: Check whether you run Gitroom Postiz at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A vulnerability in the Skool integration callback of Postiz allowed for JWT forgery and subsequent authentication bypass. The application signed attacker-provided JSON data into a session JWT using the internal JWT_SECRET without sufficient validation. Furthermore, the authentication middleware trusted the claims within the JWT (such as 'isSuperAdmin') without verifying the user's actual status against the database. An authenticated attacker could exploit this to elevate their privileges to 'SUPERADMIN' and impersonate any organization. The vulnerability is tracked as CWE-302, CWE-345, and CWE-863. It has been patched in version 2.21.8 by ensuring claims are properly validated and users are re-resolved.

Affected products

gitroomhq postiz-app < 2.21.8

Timeline

2026-05-22: disclosed: Postiz received the vulnerability report.
2026-05-22: patched: Fix developed and verified.
2026-06-17: advisory: CVE-2026-48781 published.

References

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