CVE-2026-45380

LOW EPSS 1.9%
Published Jun 10, 20262w ago · Modified Jun 17, 20261w ago
3.6 CVSS 3.1
Low
Find Similar
Published Jun 10, 2026 2w ago
Last Modified Jun 17, 2026 1w ago

Description

bit7z is a cross-platform C++ static library that allows the compression/extraction of archive files. Prior to version 4.0.12, a one-byte off-by-one error in SafeOutPathBuilder::restoreSymlink() allows an attacker to craft a .7z archive that, when extracted with bit7z on any non-Windows platform, creates a symlink escaping the intended output directory. Subsequent archive entries extracted through this symlink write arbitrary files outside the extraction directory with the permissions of the extracting process. This issue has been patched in version 4.0.12.

CVSS Details

Base Score
3.6
Exploitability
1.0
Impact
2.5
Vector string
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L
Attack Vector Local
Attack Complexity High
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality None
Integrity Low
Availability Low

Threat Intelligence

EPSS Exploit Probability
1.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 2

CWE-193
CWE-22 Path Traversal Resource Mgmt

References 2

  • github.com https://github.com/rikyoz/bit7z/releases/tag/v4.0.12
  • github.com https://github.com/rikyoz/bit7z/security/advisories/GHSA-8wj8-9jwv-j24v

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.