Copeland XWEB EVO up to 5.6.1 Lua CGI Interpreter /usr/bin/lua system argv command injection

CVSS Meta Temp Score
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CTI Interest Score
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6.9$0-$5k0.28+

Summaryinfo

A vulnerability, which was classified as critical, has been found in Copeland XWEB EVO up to 5.6.1. Impacted is the function system of the file /usr/bin/lua of the component Lua CGI Interpreter. This manipulation of the argument argv causes command injection. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is tracked as CVE-2026-124003. The attack is restricted to local execution. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Copeland XWEB EVO up to 5.6.1. It has been declared as critical. Affected by this vulnerability is the function system of the file /usr/bin/lua of the component Lua CGI Interpreter. The manipulation of the argument argv with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

XWEB EVO before 5.6.2 contains a command injection vulnerability where the setuid-root Lua CGI interpreter wlua executes system("/usr/bin/lua "+argv) on unsanitized input. Attackers can craft malicious input reached through a .lua CGI endpoint to inject arbitrary commands into the concatenated argv string, achieving command execution with root privileges. This product line reached it's end of service date in March 2026.

It is possible to read the advisory at webapps.copeland.com. This vulnerability is known as CVE-2026-124003 since 11/06/2026. The exploitation appears to be easy. Attacking locally is a requirement. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

Upgrading to version 5.6.2 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

Support

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.8
CNA Vector (VulnCheck): 🔒

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: XWEB EVO 5.6.2

Timelineinfo

11/06/2026 CVE reserved
11/12/2026 +6 days Advisory disclosed
11/12/2026 +0 days VulDB entry created
11/12/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: webapps.copeland.com
Status: Confirmed

CNA: VulnCheck
CVE: CVE-2026-124003 (🔒)

GCVE (CVE): GCVE-0-2026-124003
GCVE (VulDB): GCVE-100-436507

Entryinfo

Created: 11/12/2026 21:06
Changes: 11/12/2026 21:06 (79)
Complete: 🔍
Cache ID: 216::103

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