{"id":"CVE-2026-56021","state":"PUBLISHED","title":"Webmin information disclosure via regex pattern","description":"Webmin allows unauthenticated attackers to read the contents of any file ending in .conf within module directories, due to a bypassable regex pattern.","publishedAt":"2026-06-18T16:11:46.310Z","updatedAt":"2026-06-24T19:54:23.848Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"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","source":"cisa-cg"},"assigner":"cisa-cg","products":["Webmin Webmin"],"affected":[{"vendor":"Webmin","product":"Webmin","defaultStatus":"unknown","versions":[{"version":"*","status":"affected"}]}],"references":["https://webmin.com/security/#webmin-prior-to-2641","https://github.com/webmin/webmin/releases/tag/2.641","https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-169-02.json","https://www.cve.org/CVERecord?id=CVE-2026-56021"],"weaknesses":["CWE-185","CWE-777"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/56xxx/CVE-2026-56021.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-56021","state":"PUBLISHED","datePublished":"2026-06-18T16:11:46.310Z","dateUpdated":"2026-06-24T19:54:23.848Z","assignerShortName":"cisa-cg","assignerOrgId":"9119a7d8-5eab-497f-8521-727c672e3725","dateReserved":"2026-06-18T14:15:35.109Z"},"containers":{"cna":{"title":"Webmin information disclosure via regex pattern","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"}]}],"references":[{"url":"https://webmin.com/security/#webmin-prior-to-2641","name":"url","tags":["release-notes"]},{"url":"https://github.com/webmin/webmin/releases/tag/2.641","name":"url","tags":["release-notes"]},{"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","name":"url","tags":["vdb-entry"]}],"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"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-185","description":"CWE-185 Incorrect Regular Expression","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-777","description":"CWE-777 Regular Expression without Anchors","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"cisa-cg","orgId":"9119a7d8-5eab-497f-8521-727c672e3725","dateUpdated":"2026-06-18T16:11:46.310Z"},"credits":[{"value":"Adem El Adeb, vulone.com/vul1.com","lang":"en"}],"datePublic":"2026-06-18T00:00:00.000Z"},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-24T19:54:17.406725Z","id":"CVE-2026-56021","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-24T19:54:23.848Z"}}]}}}