---
title: "CVE-2026-91078: TillKit WordPress - Authentication Bypass"
description: "TillKit WordPress plugin < 1.0.5 contains a broken authentication caused by use of a hard-coded PIN for privileged POS account, letting unauthenticated attackers obtain privileged sessions to read and modify data, exploit requires no authentication."
url: https://panop.io/threat-heartbeat/CVE-2026-91078/
---

# CVE-2026-91078 TillKit WordPress - Authentication Bypass

TillKit WordPress plugin < 1.0.5 contains a broken authentication caused by use of a hard-coded PIN for privileged POS account, letting unauthenticated attackers obtain privileged sessions to read and modify data, exploit requires no authentication.

CVSS base score 8.2 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.19% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-91078)

## Details

Type

Authentication Bypass

Impact

Broken Access Control, Information Disclosure, Data Tampering

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

Published

3 October 2026

Updated

15 October 2026

Weakness

[CWE-287](https://cwe.mitre.org/data/definitions/287.html)

## Vendor fix

Update to version 1.0.5 or later.

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-2026-91078](https://nvd.nist.gov/vuln/detail/CVE-2026-91078)
- [https://wpscan.com/vulnerability/7ab037d6-c670-4eaf-be0d-11cc9e20b18e/](https://wpscan.com/vulnerability/7ab037d6-c670-4eaf-be0d-11cc9e20b18e/)

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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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