CVE-2026-123621

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Source
https://cve.org/CVERecord?id=CVE-2026-123621
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-123621.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-123621
Published
2026-11-06T15:00:56Z
Modified
2026-11-08T02:47:31Z
Severity
  • 8.6 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Usermin through 2.570 Path Traversal File Write via detachall.cgi
Details

Usermin through 2.570 contains a path traversal vulnerability in mailbox/detachall.cgi that allows remote unauthenticated attackers to write files outside the temporary directory via unsanitized attachment filenames. Attackers can email attachments with ../ sequences in filenames, and when the recipient downloads all attachments, files like ~/.forward are overwritten, enabling command execution.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-22"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/123xxx/CVE-2026-123621.json"
}
References

Affected packages

Git / github.com/webmin/usermin

Affected ranges

Type
GIT
Repo
https://github.com/webmin/usermin
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
cb4614e8319e0932b10533a4d5606debf5f40e14
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "last_affected": "2.570"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        },
        {
            "range": [
                {
                    "fixed": "cb4614e8319e0932b10533a4d5606debf5f40e14"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

1.*
1.803
1.810
1.812
1.820
1.823
1.830
1.832
1.833
1.834
1.840
1.841
1.850
1.851
1.852
1.853
1.854
1.860
1.861
2.*
2.000
2.001
2.002
2.003
2.004
2.005
2.010
2.100
2.102
2.200
2.201
2.202
2.203
2.300
2.301
2.302
2.400
2.420
2.500
2.510
2.520
2.521
2.530
2.540
2.550
2.551
2.552
2.560
2.570

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-123621.json"