{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-30877", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-06T00:04:56.699Z", "datePublished": "2026-03-31T00:45:09.718Z", "dateUpdated": "2026-03-31T00:45:09.718Z"}, "containers": {"cna": {"title": "baserCMS: OS Command Injection in the baserCMS Update Functionality", "problemTypes": [{"descriptions": [{"cweId": "CWE-78", "lang": "en", "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/baserproject/basercms/security/advisories/GHSA-m9g7-rgfc-jcm7", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/baserproject/basercms/security/advisories/GHSA-m9g7-rgfc-jcm7"}, {"name": "https://basercms.net/security/JVN_20837860", "tags": ["x_refsource_MISC"], "url": "https://basercms.net/security/JVN_20837860"}, {"name": "https://github.com/baserproject/basercms/releases/tag/5.2.3", "tags": ["x_refsource_MISC"], "url": "https://github.com/baserproject/basercms/releases/tag/5.2.3"}], "affected": [{"vendor": "baserproject", "product": "basercms", "versions": [{"version": "< 5.2.3", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-31T00:45:09.718Z"}, "descriptions": [{"lang": "en", "value": "baserCMS is a website development framework. Prior to version 5.2.3, there is an OS command injection vulnerability in the update functionality. Due to this issue, an authenticated user with administrator privileges in baserCMS can execute arbitrary OS commands on the server with the privileges of the user account running baserCMS. This issue has been patched in version 5.2.3."}], "source": {"advisory": "GHSA-m9g7-rgfc-jcm7", "discovery": "UNKNOWN"}}}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:basercms:basercms:*:*:*:*:*:*:*:*", "matchCriteriaId": "07DEEEF3-0621-431D-8A38-405EDBD0957E", "versionEndExcluding": "5.2.3", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "baserCMS is a website development framework. Prior to version 5.2.3, there is an OS command injection vulnerability in the update functionality. Due to this issue, an authenticated user with administrator privileges in baserCMS can execute arbitrary OS commands on the server with the privileges of the user account running baserCMS. This issue has been patched in version 5.2.3."}, {"lang": "es", "value": "baserCMS es un framework de desarrollo de sitios web. Antes de la versi\u00f3n 5.2.3, existe una vulnerabilidad de inyecci\u00f3n de comandos del sistema operativo en la funcionalidad de actualizaci\u00f3n. Debido a este problema, un usuario autenticado con privilegios de administrador en baserCMS puede ejecutar comandos arbitrarios del sistema operativo en el servidor con los privilegios de la cuenta de usuario que ejecuta baserCMS. Este problema ha sido parcheado en la versi\u00f3n 5.2.3."}], "id": "CVE-2026-30877", "lastModified": "2026-04-01T20:28:43.797", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 6.0, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.2, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-03-31T01:16:35.830", "references": [{"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://basercms.net/security/JVN_20837860"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/baserproject/basercms/releases/tag/5.2.3"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/baserproject/basercms/security/advisories/GHSA-m9g7-rgfc-jcm7"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"analysis": {"en": {"generated_at": "2026-03-31T05:37:04.908223+00:00", "value": {"mitigation_remediation": ["Upgrade baserCMS to version 5.2.3 or later.", "Restrict administrative accounts to trusted users and enforce least privilege.", "Audit and monitor web logs for suspicious command execution activity."], "summary": {"action": "Patch Now", "impact": "Remote Command Execution"}, "threat_synthesis": {"affected_systems": "The affected vendor is baserproject, product basercms. Versions prior to 5.2.3 are vulnerable. Version 5.2.3 and later contain the fix.", "description_and_impact": "An OS command injection flaw exists in the update feature of baserCMS. An authenticated administrator can trigger arbitrary operating\u2011system commands through the web interface, therefore obtaining full control over the host running the CMS. The attacker can execute commands with the privileges of the CMS process, enabling system compromise, data theft, or denial of service.", "risk_and_exploitability": "The vulnerability carries a CVSS score of 9.1, indicating a high severity. Exploit probability data is not available and the issue is not listed in the CISA KEV catalog. The likely attack path requires authenticated access with administrative rights; an attacker who can log in as an administrator can invoke arbitrary commands, making this a serious local privilege escalation that can lead to full system compromise."}}}}, "created": "2026-03-31T19:56:41.593029+00:00", "updated": "2026-03-31T19:56:41.593061+00:00", "vendors": []}