---
id: CVE-2026-57863
title: >-
  Crater Invoice through 6.0.6 contains a path traversal vulnerability in the
  self-update API that allows authenticated company owners to write arbitrary
  files outside the intended extraction directory by supplying crafted ZIP
  archives wit…
summary: >-
  Crater Invoice through 6.0.6 contains a path traversal vulnerability in the
  self-update API that allows authenticated company owners to write arbitrary
  files outside the intended extraction directory by supplying crafted ZIP
  archives wit…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-22
published: '2026-08-25'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T20:43:32.537'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-57863'
references:
  - url: 'https://gist.github.com/sermikr0/cc58727e6a777b6ea1104e923803a0ba'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/crater-invoice-path-traversal-rce-via-update-unzip-endpoint
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00899
epssPercentile: 0.59446
ingestedAt: '2026-09-24T20:51:40.226Z'
vendor: crater-invoice-inc
product: crater
affected:
  - crater <= 6.0.6
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-08-25T14:34:59.228188Z'
---

## Overview

Crater Invoice through 6.0.6 contains a path traversal vulnerability in the self-update API that allows authenticated company owners to write arbitrary files outside the intended extraction directory by supplying crafted ZIP archives with ../ sequences to the unzip endpoint. Attackers can exploit unsanitized ZIP entry names passed to PHP's ZipArchive::extractTo() to write arbitrary PHP files into the web-accessible public directory and achieve remote code execution on the server.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.