---
title: "CVE-2026-55383: InvoiceShelf - Broken Access Control"
description: "InvoiceShelf < 2.4.0 contains an information disclosure caused by improper verification of EmailLog token's mailable_type and expiration in public customer invoice, estimate, and payment routes, letting attackers access other companies' documents and use expired tokens, exploit requires crafted token with numeric identifier collision."
url: https://panop.io/threat-heartbeat/CVE-2026-55383/
---

# CVE-2026-55383 InvoiceShelf - Broken Access Control

InvoiceShelf < 2.4.0 contains an information disclosure caused by improper verification of EmailLog token's mailable\_type and expiration in public customer invoice, estimate, and payment routes, letting attackers access other companies' documents and use expired tokens, exploit requires crafted token with numeric identifier collision.

CVSS base score 8.2 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-55383)

## Details

Type

Broken Access Control

Impact

Information Disclosure

CVSS vector

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

Published

14 October 2026

Updated

15 October 2026

Weakness

[CWE-285](https://cwe.mitre.org/data/definitions/285.html)

## Vendor fix

Update to version 2.4.0 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-2026-55383](https://nvd.nist.gov/vuln/detail/CVE-2026-55383)
- [https://github.com/InvoiceShelf/InvoiceShelf/commit/5839d8385debf379644f55e773639e1c7e673163](https://github.com/InvoiceShelf/InvoiceShelf/commit/5839d8385debf379644f55e773639e1c7e673163)
- [https://github.com/InvoiceShelf/InvoiceShelf/pull/662](https://github.com/InvoiceShelf/InvoiceShelf/pull/662)
- [https://github.com/InvoiceShelf/InvoiceShelf/releases/tag/2.4.0](https://github.com/InvoiceShelf/InvoiceShelf/releases/tag/2.4.0)
- [https://github.com/InvoiceShelf/InvoiceShelf/security/advisories/GHSA-73q7-2953-8gvx](https://github.com/InvoiceShelf/InvoiceShelf/security/advisories/GHSA-73q7-2953-8gvx)

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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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