CVE-2026-26279

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{"affected": [{"affectedData": [{"product": "Froxlor", "vendor": "froxlor", "versions": [{"status": "affected", "version": "< 2.3.4"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:froxlor:froxlor:*:*:*:*:*:*:*:*", "matchCriteriaId": "49CEB95F-CF4B-45DB-A6A7-B6CE5E1F9961", "versionEndExcluding": "2.3.4", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Froxlor is open source server administration software. Prior to 2.3.4, a typo in Froxlor's input validation code (== instead of =) completely disables email format checking for all settings fields declared as email type. This allows an authenticated admin to store arbitrary strings in the panel.adminmail setting. This value is later concatenated into a shell command executed as root by a cron job, where the pipe character | is explicitly whitelisted. The result is full root-level Remote Code Execution. This vulnerability is fixed in 2.3.4."}, {"lang": "es", "value": "Froxlor es software de administraci\u00f3n de servidor de c\u00f3digo abierto. Antes de la versi\u00f3n 2.3.4, un error tipogr\u00e1fico en el c\u00f3digo de validaci\u00f3n de entrada de Froxlor (== en lugar de =) deshabilita completamente la verificaci\u00f3n del formato de correo electr\u00f3nico para todos los campos de configuraci\u00f3n declarados como tipo de correo electr\u00f3nico. Esto permite a un administrador autenticado almacenar cadenas arbitrarias en la configuraci\u00f3n panel.adminmail. Este valor se concatena posteriormente en un comando de shell ejecutado como root por una tarea cron, donde el car\u00e1cter de tuber\u00eda | est\u00e1 expl\u00edcitamente en la lista blanca. El resultado es una ejecuci\u00f3n remota de c\u00f3digo completa a nivel de root. Esta vulnerabilidad se corrige en la versi\u00f3n 2.3.4."}], "id": "CVE-2026-26279", "lastModified": "2026-06-17T10:26:02.043", "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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-26279", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-03-04T16:12:37.881548Z", "version": "2.0.3"}}]}, "published": "2026-03-03T23:15:55.223", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "url": "https://github.com/froxlor/Froxlor/security/advisories/GHSA-33mp-8p67-xj7c"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/froxlor/froxlor/commit/22249677107f8f39f8d4a238605641e87dab4343"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/froxlor/froxlor/releases/tag/2.3.4"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}, {"lang": "en", "value": "CWE-482"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.3.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Froxlor", "source": "cna", "vendor": "froxlor"}, "product": "froxlor", "vendor": "froxlor"}], "analysis": {"en": {"generated_at": "2026-04-17T13:18:14.109414+00:00", "value": {"mitigation_remediation": ["Upgrade Froxlor to version 2.3.4 or later to apply the fix for input validation and command construction.", "If an upgrade cannot be performed immediately, block or sanitize the \"panel.adminmail\" input by enforcing strict email validation and removing the pipe character from the whitelist before it reaches the cron command.", "Disable the affected cron job or replace it with a version that does not concatenate unvalidated configuration values, thereby eliminating the execution path for injected commands."], "summary": {"action": "Immediate Patch", "impact": "Root\u2011level Remote Code Execution via command injection"}, "threat_synthesis": {"affected_systems": "The vulnerability affects all Froxlor installations prior to version 2.3.4. Administrators using older releases who have not applied the 2.3.4 update are susceptible. The product, Froxlor, is open\u2011source server\u2011administration software and the flaw exists in its core input\u2011validation subsystem.", "description_and_impact": "A logic fault in input validation causes the \"panel.adminmail\" configuration field to skip email format checks, allowing an authenticated administrator to store arbitrary text. That text is later concatenated into a shell command executed by a root\u2011privileged cron job; the pipe character is explicitly allowed, enabling injection of arbitrary commands. The flaw exploits CWE\u201178 (OS Command Injection) and, by bypassing input validation, also maps to CWE\u2011482. The resulting attack vector permits full control of the underlying system as root, compromising confidentiality, integrity, and availability.", "risk_and_exploitability": "With a CVSS score of 9.1 the threat is considered critical. Although the EPSS score is under 1%, the severity warrants immediate attention, and the vulnerability is not listed in the CISA KEV catalog. The attack requires a legitimate administrator account and the ability to modify the \"panel.adminmail\" setting; once set, the root\u2011executed cron job will invoke the injected command. Because the injection is content\u2011based and does not require additional code\u2011execution constraints, exploitation under the stated conditions is straightforward."}}}}, "created": "2026-03-04T14:53:32.970854+00:00", "updated": "2026-04-17T13:30:19.592487+00:00", "vendors": ["froxlor", "froxlor$PRODUCT$froxlor"]}