Path Traversal in Rikyoz Bit7z
CVE-2026-27117
bit7z is a cross-platform C++ static library that allows the compression/extraction of archive files. Prior to version 4.0.11, a path traversal vulnerability ("Zip Slip") exists in bit7z's archive extraction functionality. The library does…
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.003 (23.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.
Affected products
- Rikyoz Bit7z — versions < 4.0.11
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-27117?
- CVE-2026-27117 is a medium-severity vulnerability in Rikyoz Bit7z, classified under Path Traversal. CVSS score: 5.5/10. Published 2026-02-24.
- How severe is CVE-2026-27117?
- Medium severity. CVSS v3 base score is 5.5 out of 10.