---
title: "CVE-2026-115933: Postiz - Authentication Bypass"
description: "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."
url: https://panop.io/threat-heartbeat/CVE-2026-115933/
---

# 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 ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-115933)

## 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](https://cwe.mitre.org/data/definitions/290.html)

## 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

- [https://nvd.nist.gov/vuln/detail/CVE-2026-115933](https://nvd.nist.gov/vuln/detail/CVE-2026-115933)
- [https://github.com/gitroomhq/postiz-app/releases/tag/v2.25.3](https://github.com/gitroomhq/postiz-app/releases/tag/v2.25.3)
- [https://gadvisory.org/advisories/PSA-2026-YT2HMH](https://gadvisory.org/advisories/PSA-2026-YT2HMH)
- [https://github.com/gitroomhq/postiz-app](https://github.com/gitroomhq/postiz-app)
- [https://github.com/gitroomhq/postiz-app/commit/a5affe62c74e39c1e7ac960d50d8418b807d532c](https://github.com/gitroomhq/postiz-app/commit/a5affe62c74e39c1e7ac960d50d8418b807d532c)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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