{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-56021", "assignerOrgId": "9119a7d8-5eab-497f-8521-727c672e3725", "state": "PUBLISHED", "assignerShortName": "cisa-cg", "dateReserved": "2026-06-18T14:15:35.109Z", "datePublished": "2026-06-18T16:11:46.310Z", "dateUpdated": "2026-06-18T16:11:46.310Z"}, "containers": {"cna": {"descriptions": [{"lang": "en", "value": "Webmin allows unauthenticated attackers to read the contents of any file ending in .conf within module directories, due to a bypassable regex pattern."}], "affected": [{"vendor": "Webmin", "product": "Webmin", "defaultStatus": "unknown", "versions": [{"version": "*", "status": "affected"}]}], "problemTypes": [{"descriptions": [{"description": "CWE-185 Incorrect Regular Expression", "lang": "en", "type": "CWE", "cweId": "CWE-185"}]}, {"descriptions": [{"description": "CWE-777 Regular Expression without Anchors", "lang": "en", "type": "CWE", "cweId": "CWE-777"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}}, {"cvssV4_0": {"version": "4.0", "baseScore": 6.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "LOW"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-05-29T20:05:32.308076Z", "id": "CVE-2026-56021", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "Webmin information disclosure via regex pattern", "references": [{"name": "url", "url": "https://webmin.com/security/#webmin-prior-to-2641", "tags": ["release-notes"]}, {"name": "url", "url": "https://github.com/webmin/webmin/releases/tag/2.641", "tags": ["release-notes"]}, {"name": "url", "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-169-02.json"}, {"name": "url", "url": "https://www.cve.org/CVERecord?id=CVE-2026-56021", "tags": ["vdb-entry"]}], "credits": [{"value": "Adem El Adeb, vulone.com/vul1.com", "lang": "en"}], "datePublic": "2026-06-18T00:00:00.000Z", "providerMetadata": {"orgId": "9119a7d8-5eab-497f-8521-727c672e3725", "shortName": "cisa-cg", "dateUpdated": "2026-06-18T16:11:46.310Z"}}}}

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