CVE-2026-45384

Severity CVSS v4.0:

Pending analysis

Type:

CWE-59 Link Following

Publication date:

10/06/2026

Last modified:

11/06/2026

Description

bit7z is a cross-platform C++ static library that allows the compression/extraction of archive files. Prior to version 4.0.12, there is an arbitrary file overwrite vulnerability via symlink attack on predictable temp files during archive update. This issue has been patched in version 4.0.12.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L CVSS v3.1 Severity and Metrics:

Base Score: 6.10 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): High
Availability (A): Low

Base Score 3.x

6.10

Severity 3.x

MEDIUM

References to Advisories, Solutions, and Tools

https://github.com/rikyoz/bit7z/releases/tag/v4.0.12
https://github.com/rikyoz/bit7z/security/advisories/GHSA-wjch-42rm-q53h
https://github.com/rikyoz/bit7z/security/advisories/GHSA-wjch-42rm-q53h