Path Traversal Vulnerability in Crater Invoice by Crater
CVE-2026-57863

8.7HIGH

Key Information:

Vendor

Crater-invoice-inc

Status
Crater
Vendor
CVE Published:
25 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-57863?

Crater Invoice versions up to 6.0.6 are susceptible to a path traversal vulnerability within their self-update API. This weakness allows authenticated company owners to manipulate crafted ZIP archives to bypass directory restrictions, enabling the writing of arbitrary files outside the intended extraction directory. By exploiting unsanitized entries from ZIP files passed to PHP's ZipArchive::extractTo(), attackers can potentially place malicious PHP files within the publicly accessible web directory, which could lead to unauthorized remote code execution on the server.

Affected Version(s)

crater 0 <= 6.0.6

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-57863 - Proof of Concept

References

https://gist.github.com/sermikr0/cc58727e6a777b6ea1104e92...
technical-descriptionexploit
https://www.vulncheck.com/advisories/crater-invoice-path-...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Saidakbarxon Maxsudxonov
.