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CVE-2026-57863— Crater Invoice 6.0.6 Path Traversal RCE via update/unzip endpoint

Quick assessment

Affected
crater-invoice-inc crater
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Crater Invoice 版本 6.0.6 及之前版本在自更新 API 中存在路径遍历漏洞。经身份验证的公司所有者可以通过向解压接口（unzip endpoint）提交包含 “../” 序列的精心构造的 ZIP 归档文件，将任意文件写入预期提取目录之外。攻击者可以利用传递给 PHP 的 ZipArchive::extractTo() 方法的未经验证的 ZIP 条目名称，将任意 PHP 文件写入 Web 可访问的 public 目录，从而在服务器上实现远程代码执行（RCE）。

CVSS 8.8 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
crater-invoice-inc crater ≤ 6.0.6 affected
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I. Basic Information for CVE-2026-57863

Vulnerability Information
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Vulnerability Title
Crater Invoice 6.0.6 Path Traversal RCE via update/unzip endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
crater-invoice-inc crater 0 ~ 6.0.6 -

II. Public POCs for CVE-2026-57863

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III. Intelligence Information for CVE-2026-57863

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Vendor Advisories for CVE-2026-57863 (1)

Proof of Concept for CVE-2026-57863 (1)

IV. Related Vulnerabilities

Same product: crater
Same vendor: crater-invoice-inc
Same weakness: CWE-22

V. Comments for CVE-2026-57863

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