{"id":"CVE-2026-57311","state":"PUBLISHED","title":"Unrestricted Upload of File with Dangerous Type in Windu CMS","description":"Windu CMS does not validate types of uploaded files. An authenticated attacker can upload arbitrary files, including PHP. This can lead to Remote Code Execution.\n\nBecause vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 4.1 but may also affect other versions.","publishedAt":"2026-07-20T12:53:08.554Z","updatedAt":"2026-07-29T09:42:56.327Z","severity":{"score":5.3,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L","source":"CERT-PL"},"assigner":"CERT-PL","products":["JCD Windu CMS"],"affected":[{"vendor":"JCD","product":"Windu CMS","defaultStatus":"unknown","versions":[{"version":"4.1","status":"affected","versionType":"custom"}]}],"references":["https://cert.pl/posts/2026/07/CVE-2026-57309","https://windu.org"],"weaknesses":["CWE-434"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/57xxx/CVE-2026-57311.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-57311","state":"PUBLISHED","datePublished":"2026-07-20T12:53:08.554Z","dateUpdated":"2026-07-29T09:42:56.327Z","assignerShortName":"CERT-PL","assignerOrgId":"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6","dateReserved":"2026-06-24T12:12:42.195Z"},"containers":{"cna":{"title":"Unrestricted Upload of File with Dangerous Type in Windu CMS","descriptions":[{"lang":"en","value":"Windu CMS does not validate types of uploaded files. An authenticated attacker can upload arbitrary files, including PHP. This can lead to Remote Code Execution.\n\nBecause vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 4.1 but may also affect other versions."}],"affected":[{"vendor":"JCD","product":"Windu CMS","defaultStatus":"unknown","versions":[{"version":"4.1","status":"affected","versionType":"custom"}]}],"references":[{"url":"https://cert.pl/posts/2026/07/CVE-2026-57309","tags":["third-party-advisory"]},{"url":"https://windu.org","tags":["product"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","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":5.3,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-434","lang":"en","description":"CWE-434 Unrestricted Upload of File with Dangerous Type","type":"CWE"}]}],"providerMetadata":{"shortName":"CERT-PL","orgId":"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6","dateUpdated":"2026-07-29T09:42:56.327Z"},"datePublic":"2026-07-20T00:00:00.000Z","credits":[{"lang":"en","value":"Jakub Lipiński","type":"finder"},{"lang":"en","value":"Marek Tołczyk","type":"finder"},{"lang":"en","value":"Kamil Królikowski","type":"finder"},{"lang":"en","value":"Karol Czubernat","type":"finder"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-20T13:45:57.751479Z","id":"CVE-2026-57311","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":"2026-07-20T13:46:09.348Z"}}]}}}