Path Traversal in Crater-Invoice-Inc Crater
CVE-2026-57863
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (58.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.009 · change: +0.003
Affected products
Weakness classification (CWE)
References
- gist.github.com/sermikr0/cc58727e6a777b6ea1104e923803a0ba (technical-description, exploit)
- www.vulncheck.com/advisories/crater-invoice-path-traversal-rce-via-update-unzip… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-57863?
- CVE-2026-57863 is a high-severity vulnerability in Crater-Invoice-Inc Crater, classified under Path Traversal. CVSS score: 8.8/10. Published 2026-08-25.
- How severe is CVE-2026-57863?
- High severity. CVSS v3 base score is 8.8 out of 10.