Vulnerability · Published Aug 25, 2026 · Assigned by VulnCheck

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

High 8.8

In plain English

A high-severity path traversal in crater from crater-invoice-inc. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 60% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.9%top 40.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
crater-invoice-inc	crater	0 – through 6.0.6

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Researcher Disclosure technical-description, exploit
https://www.vulncheck.com/advisories/crater-invoice-path-traversal-rce-via-update-unzip-endpoint third-party-advisory