CVE-2026-85396

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Source
https://cve.org/CVERecord?id=CVE-2026-85396
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-85396.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-85396
Downstream
Published
2026-09-03T18:54:27.903Z
Modified
2026-09-05T03:48:29.591751761Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
rubyzip before 3.4.0 Path Traversal in Zip::Entry#extract via Sibling-Directory Prefix
Details

rubyzip versions before 3.4.0 contain a path traversal vulnerability in Zip::Entry#extract that fails to properly validate extraction paths using prefix comparison without trailing separators. Attackers can craft archive entries with names like ../upload_backup/owned.sh to write files outside the intended extraction directory into sibling paths sharing the destination prefix.

Database specific 
{
    "cwe_ids": [
        "CWE-22"
    ],
    "cna_assigner": "VulnCheck",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85396.json"
}
References

Affected packages

Git / github.com/rubyzip/rubyzip

Affected ranges

Type
GIT
Repo
https://github.com/rubyzip/rubyzip
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
93f9e6f217029949b00c174a40b814f9a9c44bfa
Fixed
17edfbf4423b83211b075acc23a7d8640da63449
Database specific
Show details 
{
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "3.4.0"
        }
    ]
}

Affected versions

0.*
0.9.5
0.9.7
0.9.9
v1.*
v1.0.0
v1.0.0.beta1
v1.1.0
v1.1.1
v1.1.2
v1.1.3
v1.1.4
v1.1.5
v1.1.6
v1.1.7
v1.2.0
v1.2.1
v1.2.2
v1.2.3
v1.2.4
v1.3.0
v2.*
v2.0.0
v2.1.0
v2.2.0
v2.3.0
v3.*
v3.0.0
v3.0.0.alpha
v3.0.0.rc1
v3.0.0.rc2
v3.0.1
v3.0.2
v3.1.0
v3.1.1
v3.2.0
v3.2.1
v3.2.2
v3.3.0
v3.3.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-85396.json"