CVE-2026-108540 Details
Description
A flaw has been found in OpenSpug Spug up to 3.4.0/4.0.1. This impacts an unknown function of the file /exec/transfer of the component File Transfer. Executing a manipulation can lead to os command injection. The attack may be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
A command injection vulnerability has been identified in OpenSpug versions through 3.4.0 and 4.0.1. The issue resides in the File Transfer component, specifically within the '/exec/transfer' endpoint. This vulnerability allows for remote execution of operating system commands on the Spug server, as well as on arbitrary managed hosts, by exploiting the file distribution feature. The command injection occurs because user-supplied data is not properly validated before being executed as part of a command-line instruction.
To address this vulnerability, it is recommended to validate and sanitize user inputs to prevent command injection. This can be done by using structured argument arrays for command execution, applying strict allowlist validation for file paths, and enforcing ownership and authorization checks on source hosts.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 11, 2026CISA-ADP
Assessed Oct 14, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/SECWG/CVE/issues/10 | [email protected] | ExploitIssue TrackingTechnical Analysis |
| https://vuldb.com/cve/CVE-2026-108540 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/948328 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/416195 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/416195/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | [email protected] |
| CWE-78 | Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| OpenSpug Spug | <= 3.4.0 (semver) <= 4.0.1 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 14, 2026 | CVE Modified | CISA-ADP |
| Oct 11, 2026 | New CVE Received | [email protected] |