CVE-2026-115933 Postiz - Authentication Bypass

Postiz contains a broken authentication caused by shared secret signing of multiple token types without differentiation, letting attackers forge tokens for sessions, invitations, or password resets, exploit requires crafted token submission.

CVSS base score 9.9 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.25% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Privilege Escalation, Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Published
24 October 2026
Updated
26 October 2026
Weakness
CWE-290

Vendor fix

Update to a version that uses separate secrets or token markers for different token types or apply token type validation.

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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