# CVE-2026-124002: Dixell/Copeland XWEB EVO Pre-Auth OS Command Injection via Username

Status: published. Published: 2026-11-12. Updated: 2026-11-12.

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.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate

## Affected products and versions

- Copeland / XWEB EVO: ≥ 5.2.3; < 5.7.0 (affected, semver); 5.7.0 (unaffected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 9.3 (critical); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 9.8 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-78, CWE-306

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate (CNA: VulnCheck; patch, product)

- https://www.vulncheck.com/advisories/dixell-copeland-xweb-evo-pre-authentication-os-command-injection-via-username (CNA: VulnCheck; third-party-advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-124002; retrieved 2026-11-12; source updated 2026-11-12

Revision: 8cb8b79b7bf979c1e057201c03c86790094750ceb13953fcd582227848becb6b

Canonical: https://y2.dev/cve/CVE-2026-124002

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