CVE-2026-42099

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The application downloads the properties of the object pointed by guid parameter and saves loaded content in current location&nbsp;(__DIR__)&nbsp;under the specified name. An attacker with repository access can control both the filename and file contents, allowing the creation of a malicious PHP file in a current directory. Although the file is deleted after processing, a race condition exists: if the response transmission is delayed (e.g., via a large file or slow client connection), the file remains accessible. During this window, the attacker can issue a second request to execute the malicious PHP file, resulting in remote code execution.</div></div></div></div><br>The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only version 6.1 (build 167) and below were tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.<br>"}], "value": "Sparx Pro Cloud Server is vulnerable to a Race Condition in the /data_api/dl_internal_artifact.php endpoint. The application downloads the properties of the object pointed by guid parameter and saves loaded content in current location\u00a0(__DIR__)\u00a0under the specified name. An attacker with repository access can control both the filename and file contents, allowing the creation of a malicious PHP file in a current directory. Although the file is deleted after processing, a race condition exists: if the response transmission is delayed (e.g., via a large file or slow client connection), the file remains accessible. During this window, the attacker can issue a second request to execute the malicious PHP file, resulting in remote code execution.\n\n\n\n\n\n\n\n\nThe vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only version 6.1 (build 167) and below were tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable."}], "impacts": [{"capecId": "CAPEC-26", "descriptions": [{"lang": "en", "value": "CAPEC-26 Leveraging Race Conditions"}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 7.7, "baseSeverity": "HIGH", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "LOW", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-362", "description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6", "shortName": "CERT-PL", "dateUpdated": "2026-05-19T12:59:38.938Z"}, "references": [{"tags": ["third-party-advisory"], "url": "https://cert.pl/en/posts/2026/05/CVE-2026-42096"}, {"tags": ["product"], "url": "https://sparxsystems.com/products/procloudserver/"}, {"tags": ["technical-description"], "url": "https://sploit.tech/2026/05/19/Sparx-Enterprise-Architect-PCS.html"}, {"tags": ["third-party-advisory"], "url": "https://efigo.pl/blog/CVE-2026-42096/"}], "source": {"discovery": "EXTERNAL"}, "title": "Race Condition in Sparx Pro Cloud Server", "x_generator": {"engine": "Vulnogram 0.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-19T15:26:11.723227Z", "id": "CVE-2026-42099", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-19T15:26:27.124Z"}}]}}

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Only version 6.1 (build 167) and below were tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.", "supportingMedia": [{"type": "text/html", "value": "<div><div><div><div>Sparx Pro Cloud Server is vulnerable to a Race Condition in the /data_api/dl_internal_artifact.php endpoint. The application downloads the properties of the object pointed by guid parameter and saves loaded content in current location&nbsp;(__DIR__)&nbsp;under the specified name. An attacker with repository access can control both the filename and file contents, allowing the creation of a malicious PHP file in a current directory. Although the file is deleted after processing, a race condition exists: if the response transmission is delayed (e.g., via a large file or slow client connection), the file remains accessible. 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{"affected": [{"affectedData": [{"defaultStatus": "unknown", "product": "Pro Cloud Server", "vendor": "Sparx Systems", "versions": [{"lessThanOrEqual": "6.1", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "cvd@cert.pl"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:sparxsystems:pro_cloud_server:*:*:*:*:*:*:*:*", "matchCriteriaId": "EF167FED-7617-4363-BC26-5E80EB059DDE", "versionEndIncluding": "6.1.167", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Sparx Pro Cloud Server is vulnerable to a Race Condition in the /data_api/dl_internal_artifact.php endpoint. The application downloads the properties of the object pointed by guid parameter and saves loaded content in current location\u00a0(__DIR__)\u00a0under the specified name. An attacker with repository access can control both the filename and file contents, allowing the creation of a malicious PHP file in a current directory. Although the file is deleted after processing, a race condition exists: if the response transmission is delayed (e.g., via a large file or slow client connection), the file remains accessible. During this window, the attacker can issue a second request to execute the malicious PHP file, resulting in remote code execution.\n\n\n\n\n\n\n\n\nThe vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only version 6.1 (build 167) and below were tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable."}, {"lang": "es", "value": "Sparx Pro Cloud Server es vulnerable a una condici\u00f3n de carrera en el endpoint /data_api/dl_internal_artifact.php. La aplicaci\u00f3n descarga las propiedades del objeto apuntado por el par\u00e1metro guid y guarda el contenido cargado en la ubicaci\u00f3n actual (__DIR__) bajo el nombre especificado. Un atacante con acceso al repositorio puede controlar tanto el nombre del archivo como el contenido del archivo, permitiendo la creaci\u00f3n de un archivo PHP malicioso en un directorio actual. Aunque el archivo se elimina despu\u00e9s del procesamiento, existe una condici\u00f3n de carrera: si la transmisi\u00f3n de la respuesta se retrasa (por ejemplo, a trav\u00e9s de un archivo grande o una conexi\u00f3n de cliente lenta), el archivo permanece accesible. Durante esta ventana, el atacante puede emitir una segunda solicitud para ejecutar el archivo PHP malicioso, lo que resulta en ejecuci\u00f3n remota de c\u00f3digo.\n\nEl proveedor fue notificado con antelaci\u00f3n sobre esta vulnerabilidad, pero no respondi\u00f3 con los detalles de la vulnerabilidad o el rango de versiones vulnerables. Solo la versi\u00f3n 6.1 (build 167) y anteriores fueron probadas y confirmadas como vulnerables; otras versiones no fueron probadas y tambi\u00e9n podr\u00edan ser vulnerables."}], "id": "CVE-2026-42099", "lastModified": "2026-10-26T13:10:00.140", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "LOW", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cvd@cert.pl", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-42099", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-19T15:26:11.723227Z", "version": "2.0.3"}}]}, "published": "2026-05-19T14:16:42.630", "references": [{"source": "cvd@cert.pl", "tags": ["Third Party Advisory"], "url": "https://cert.pl/en/posts/2026/05/CVE-2026-42096"}, {"source": "cvd@cert.pl", "tags": ["Third Party Advisory"], "url": "https://efigo.pl/blog/CVE-2026-42096/"}, {"source": "cvd@cert.pl", "tags": ["Product"], "url": "https://sparxsystems.com/products/procloudserver/"}, {"source": "cvd@cert.pl", "tags": ["Exploit", "Third Party Advisory"], "url": "https://sploit.tech/2026/05/19/Sparx-Enterprise-Architect-PCS.html"}], "sourceIdentifier": "cvd@cert.pl", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}], "source": "cvd@cert.pl", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,6.1]"}}], "enrichment": {"confidence": 89.0, "confidence_source": "matching", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 89.0, "source": "matching"}]}, "original": {"product": "Pro Cloud Server", "source": "cna", "vendor": "Sparx Systems"}, "product": "sparx_pro_cloud_server", "vendor": "sparxsystems"}], "created": "2026-05-19T14:45:07.775441+00:00", "updated": "2026-05-20T10:30:25.921685+00:00", "vendors": ["sparxsystems", "sparxsystems$PRODUCT$sparx_pro_cloud_server"]}