Vulnerability · Published Oct 11, 2026 · Assigned by VulDB

CVE-2026-108540OpenSpug File Transfer transfer os command injection

Critical 9.9

In plain English

A critical-severity OS command injection in Spug from OpenSpug. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 77% of all known vulnerabilities).

Severity (CVSS 3.1)9.9Critical

Exploit odds (30 days)1.7%top 22.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
OpenSpug	Spug	3.03.13.23.33.4.04.0.04.0.1

Weakness: CWE-78, CWE-77 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:C

References

VDB-416195 | OpenSpug File Transfer transfer os command injection vdb-entry
VDB-416195 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-108540 | CVE Analysis and Report third-party-advisory
Submit #948328 | OpenSpug spug 3.4.0 Command Injection third-party-advisory
https://github.com/SECWG/CVE/issues/10 exploit, issue-tracking