Is CVE-2026-94456 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-94456 being exploited in the wild.

How severe is CVE-2026-94456?

Critical severity, with a CVSS score of 9.1, published 22 September 2026.

Which products and versions are affected?

GitroomHQ Postiz-App up to and including 2.3.0.

Is there a fix for CVE-2026-94456?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-94456 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-94456?

Check whether you run GitroomHQ Postiz-App 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-2026-94456: GitroomHQ Postiz insecure random source in credential generation

CVE-2026-94456 · Severity: critical · CVSS 9.1 · Published 2026-09-22

Postiz, a social media scheduling platform, generates security-critical credentials like API keys, OAuth tokens, and authorization codes using an insecure random number generator (Math.random()) instead of a cryptographically secure source. An unauthenticated attacker can recover the internal state of the random generator by sampling an exposed OAuth registration endpoint, then predict all past and future credentials issued by affected instances, including those belonging to other organizations. This allows attackers to impersonate other users with administrative access to their accounts and social media connections.

Technologies: GitroomHQ Postiz-App. Vendors: GitroomHQ.

Quick answers

Is CVE-2026-94456 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-94456 being exploited in the wild.
How severe is CVE-2026-94456?: Critical severity, with a CVSS score of 9.1, published 22 September 2026.
Which products and versions are affected?: GitroomHQ Postiz-App up to and including 2.3.0.
Is there a fix for CVE-2026-94456?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-94456 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-94456?: Check whether you run GitroomHQ Postiz-App 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

Postiz uses a shared credential generation helper that draws from Math.random(), which implements V8's deterministic xorshift128+ PRNG. An unauthenticated endpoint at the OAuth dynamic client registration exposes freshly generated client credentials in bulk, providing enough consecutive PRNG output to reconstruct the internal generator state via linear algebra. Once recovered, an attacker can derive all past and future credentials (OAuth access tokens, authorization codes, client secrets, organization API keys, and PKCE verifiers) deterministically.

Affected products

GitroomHQ postiz-app up to and including 2.3.0

Timeline

2026-09-22: disclosed: CVE-2026-94456 published

References

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