CVE-2026-124002
Dixell/Copeland XWEB EVO Pre-Auth OS Command Injection via Username
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
XWEB EVO versions 5.2.3 through before 5.7.0 contains a pre-authentication OS command injection vulnerability that allows unauthenticated remote attackers to execute arbitrary OS commands by injecting shell metacharacters into the username field of login.lua, cleanout.lua, or api.lua before the password check occurs. Attackers can exploit this flaw combined with the setuid-root wlua interpreter to execute commands with root privileges, achieving full system compromise. This product line reached it's end of service date in March 2026.
| CWE | CWE-78 CWE-306 |
| Vendor | copeland |
| Product | xweb evo |
| Published | Nov 12, 2026 |
| Last Updated | Nov 12, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Copeland / XWEB EVO
5.2.3 < 5.7.0
References
Credits
Valentin Lobstein (Chocapikk)