Path Traversal in Max-Mapper Extract-Zip
CVE-2026-56876
extract-zip does not validate symlink targets when extracting zip archives. When processing a malicious zip file containing a symlink with a relative path like '../../../../etc/passwd', extract-zip will extract the symlink without validation, allowing it to point outside the extraction directory. Depending on how extract-zip is used, an attacker could read or write to arbitrary files.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (42.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001
Affected products
- Max-Mapper Extract-Zip — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- 9119a7d8-5eab-497f-8521-727c672e3725 (Exploit, Third Party Advisory, third-party-advisory)
- 9119a7d8-5eab-497f-8521-727c672e3725 (Third Party Advisory, third-party-advisory)
- 9119a7d8-5eab-497f-8521-727c672e3725 (Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2026-56876?
- CVE-2026-56876 is a high-severity vulnerability in Max-Mapper Extract-Zip, classified under Path Traversal. CVSS score: 8.1/10. Published 2026-06-26.
- How severe is CVE-2026-56876?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2026-56876 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.