Path Traversal in Peerigon Unzip-Crx
CVE-2026-78638
A flaw has been found in peerigon unzip-crx and unzip-crx-3 up to 0.2.0. This affects the function unzip of the file dist/index.js of the component Archive Extraction. Executing a manipulation of the argument destination can lead to path traversal. The attack can only be executed locally. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (6.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000
Affected products
- Peerigon Unzip-Crx — versions 0.1, 0.2.0
- Peerigon Unzip-Crx-3 — versions 0.1, 0.2.0
Weakness classification (CWE)
References
- vuldb.com/vuln/394865 (technical-description, vdb-entry)
- vuldb.com/vuln/394865/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-78638 (third-party-advisory)
- vuldb.com/submit/886400 (third-party-advisory)
- github.com/peerigon/unzip-crx/issues/19 (issue-tracking, exploit)
- github.com/peerigon/unzip-crx/ (product)
Frequently asked questions
- What is CVE-2026-78638?
- CVE-2026-78638 is a low-severity vulnerability in Peerigon Unzip-Crx, classified under Path Traversal. CVSS score: 3.3/10. Published 2026-08-25.
- How severe is CVE-2026-78638?
- Low severity. CVSS v3 base score is 3.3 out of 10.