CVE-2026-94456 Postiz - Authentication Bypass

Postiz contains a broken authentication caused by use of non-cryptographically secure Math.random() for generating security-sensitive credentials, letting unauthenticated attackers reconstruct PRNG state and compromise OAuth credentials, exploit requires access to OAuth dynamic client registration endpoint.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.52% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
22 September 2026
Updated
15 October 2026
Weakness
CWE-330

Vendor fix

Update to use a cryptographically secure random number generator for credential generation.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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