{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-65611", "assignerOrgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6", "state": "PUBLISHED", "assignerShortName": "CERT-PL", "dateReserved": "2026-07-22T10:59:31.846Z", "datePublished": "2026-08-19T13:21:25.542Z", "dateUpdated": "2026-08-19T13:21:25.542Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6", "shortName": "CERT-PL", "dateUpdated": "2026-08-19T13:21:25.542Z"}, "title": "Shell Command Injection in nnn", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-78", "description": "CWE-78 Improper neutralization of special elements used in an OS command ('OS command injection')", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-88", "descriptions": [{"lang": "en", "value": "CAPEC-88 OS Command Injection"}]}], "affected": [{"vendor": "nnn", "product": "nnn", "repo": "https://github.com/jarun/nnn", "versions": [{"status": "affected", "version": "5.2", "versionType": "git"}], "defaultStatus": "unknown"}], "descriptions": [{"lang": "en", "value": "nnn does not sanitize the path variable. An attacker can create\u00a0a directory on a shared filesystem, removable media,\u00a0or inside an extracted archive whose name contains a single quote followed\u00a0by shell syntax. If the victim enters that directory in nnn and uses the\u00a0batch copy or move workflow, the crafted directory name is embedded into the\u00a0generated shell command and the injected payload executes with the privileges of the nnn process.\n\n\nMaintainer of this project was notified about this vulnerability. It might has been addressed, but the maintainer did not provide a vulnerable version range. Only version 5.2 was tested and confirmed as vulnerable.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<div>nnn does not sanitize the path variable. An attacker can create<span>&nbsp;a directory on a shared filesystem, removable media,&nbsp;</span><span>or inside an extracted archive whose name contains a single quote followed&nbsp;</span><span>by shell syntax. If the victim enters that directory in nnn and uses the&nbsp;</span><span>batch copy or move workflow, the crafted directory name is embedded into the&nbsp;</span><span>generated shell command and the injected payload executes with the privileges of the nnn process.</span></div><div><br>Maintainer of this project was notified about this vulnerability<span>. It might has been addressed, but the maintainer did not provide a vulnerable version range. Only version 5.2 was tested and confirmed as vulnerable.</span></div>"}]}], "tags": ["x_open-source"], "references": [{"url": "https://cert.pl/en/posts/2026/08/CVE-2026-65609", "tags": ["third-party-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "ACTIVE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "subIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subAvailabilityImpact": "LOW", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "MEDIUM", "baseScore": 5.1, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L"}}], "credits": [{"lang": "en", "value": "Micha\u0142 Majchrowicz (AFINE Team)", "type": "finder"}, {"lang": "en", "value": "Marcin Wyczechowski (AFINE Team)", "type": "finder"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.3"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unknown", "product": "nnn", "repo": "https://github.com/jarun/nnn", "vendor": "nnn", "versions": [{"status": "affected", "version": "5.2", "versionType": "git"}]}], "source": "cvd@cert.pl"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "nnn does not sanitize the path variable. An attacker can create\u00a0a directory on a shared filesystem, removable media,\u00a0or inside an extracted archive whose name contains a single quote followed\u00a0by shell syntax. If the victim enters that directory in nnn and uses the\u00a0batch copy or move workflow, the crafted directory name is embedded into the\u00a0generated shell command and the injected payload executes with the privileges of the nnn process.\n\n\nMaintainer of this project was notified about this vulnerability. It might has been addressed, but the maintainer did not provide a vulnerable version range. Only version 5.2 was tested and confirmed as vulnerable."}], "id": "CVE-2026-65611", "lastModified": "2026-08-19T14:17:38.373", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.1, "baseSeverity": "MEDIUM", "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": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "LOW", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "userInteraction": "ACTIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/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": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cvd@cert.pl", "type": "Secondary"}]}, "published": "2026-08-19T14:17:38.373", "references": [{"source": "cvd@cert.pl", "url": "https://cert.pl/en/posts/2026/08/CVE-2026-65609"}], "sourceIdentifier": "cvd@cert.pl", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "cvd@cert.pl", "type": "Primary"}]}

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