CVE-2026-48781

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Source
https://cve.org/CVERecord?id=CVE-2026-48781
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48781.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-48781
Aliases
  • GHSA-j77w-h625-56q2
Published
2026-06-16T21:31:28.955Z
Modified
2026-07-15T01:49:06.053310192Z
Severity
  • 9.9 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
Summary
Postiz has cross-tenant SUPERADMIN takeover via Skool-provider JWT forgery
Details

Postiz is an AI social media scheduling tool. In versions prior to 2.21.8, the Skool integration callback signed an attacker-controlled JSON blob into a session-shape JWT using the application's JWT_SECRET, and the auth middleware trusted every claim in that JWT without re-resolving the user from the database. Any authenticated Postiz user could forge a SUPERADMIN session and impersonate arbitrary organizations. This allowed Full Access to the following: all parts of Postiz, including users registered to the specific instance and the ability to post in the name of the victim's social media channels added to that Postiz instance. This issue has been fixed in version 2.21.8.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48781.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-302",
        "CWE-345",
        "CWE-863"
    ]
}
References

Affected packages

Git / github.com/gitroomhq/postiz-app

Affected ranges

Type
GIT
Repo
https://github.com/gitroomhq/postiz-app
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
9a7d9deafcf373c759e2ec7955206a2a31b003f3
Fixed
23696d2973510ae1f3f48bfa41a6bfbbf9827b05
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.21.8"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

1.*
1.6.0
v0.*
v0.0.1
v1.*
v1.0.0
v1.1.0
v1.10.0
v1.10.1
v1.2.0
v1.22.1
v1.23.1
v1.23.2
v1.24.1
v1.26.1
v1.27.2
v1.28.1
v1.29.1
v1.3.0
v1.30.1
v1.31.1
v1.32.1
v1.33.1
v1.33.2
v1.34.1
v1.35.1
v1.36.1
v1.37.1
v1.37.2
v1.37.3
v1.37.4
v1.38.1
v1.38.2
v1.39.2
v1.39.3
v1.4.0
v1.40.0
v1.40.1
v1.41.0
v1.41.1
v1.43.0
v1.43.1
v1.43.2
v1.43.3
v1.43.4
v1.43.5
v1.44.1
v1.44.2
v1.45.1
v1.47.0
v1.48.1
v1.48.2
v1.48.3
v1.48.4
v1.49.0
v1.49.1
v1.5.0
v1.50.0
v1.51.0
v1.52.0
v1.52.1
v1.52.2
v1.53.0
v1.54.0
v1.54.1
v1.55.0
v1.55.1
v1.55.2
v1.55.3
v1.55.4
v1.55.5
v1.56.0
v1.57.0
v1.58.0
v1.59.0
v1.6.1
v1.6.12
v1.6.2
v1.6.4
v1.6.9
v1.60.0
v1.60.1
v1.61.0
v1.61.2
v1.62.0
v1.62.1
v1.62.2
v1.62.3
v1.63.0
v1.64.0
v1.64.1
v1.65.0
v1.65.1
v1.65.2
v1.65.3
v1.65.4
v1.65.5
v1.65.6
v1.65.7
v1.7.12
v1.8.1
v2.*
v2.0.1
v2.0.2
v2.0.3
v2.0.4
v2.0.5
v2.0.6
v2.0.7
v2.0.8
v2.1.1
v2.1.2
v2.10.0
v2.10.1
v2.11.0
v2.11.1
v2.11.3
v2.12.0
v2.12.1
v2.13.0
v2.14.0
v2.15.0
v2.15.1
v2.16.0
v2.17.0
v2.18.0
v2.19.0
v2.2.0
v2.2.1
v2.2.3
v2.2.4
v2.2.5
v2.20.0
v2.20.1
v2.20.2
v2.21.0
v2.21.1
v2.21.2
v2.21.3
v2.21.5
v2.21.6
v2.21.7
v2.3.0
v2.3.1
v2.4.0
v2.4.1
v2.4.2
v2.4.3
v2.5.0
v2.5.1
v2.5.2
v2.5.3
v2.5.4
v2.6.1
v2.6.2
v2.6.3
v2.6.4
v2.7.0
v2.8.0
v2.8.1
v2.8.2
v2.8.3
v2.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48781.json"