CVE-2026-45380: rikyoz bit7z · Path Traversal
Affects rikyoz bit7zSource CVE Database V5
Not known to be exploited · CVSS 3.6 Low : upgrade to 4.0.12 when convenient.
Data as of 26 Oct 2026, 06:26 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 4.0.12
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:LExploitation evidence
Disclosed: evidence found.
CVE published 10 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.
What to do
Upgrade bit7z and rikyoz/bit7z to 4.0.12.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| rikyozbit7z | Affected
| Fixed in
|
GitHubrikyoz/bit7zpkg:github/rikyoz/bit7zOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade bit7z to version 4.0.12 or later, where this vulnerability is patched. No other mitigation is indicated or required.
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.