{"id":"CVE-2026-44666","state":"PUBLISHED","title":"HRConvert2: Missing Sanitization enables Unauthenticated Remote Command Execution","description":"HRConvert2 is a self-hosted, drag-and-drop & nosql file conversion server & share tool. Prior to 3.3.8, the sanitizeString() function in convertCore.php is missing backtick (`) and tab (\\t) from its strip list. User input then reaches shell_exec(), where the shell interprets these characters and commands within filenames execute. This vulnerability is fixed in 3.3.8.","publishedAt":"2026-05-14T20:32:43.490Z","updatedAt":"2026-05-15T13:34:48.461Z","severity":{"score":9.3,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["zelon88 HRConvert2"],"affected":[{"vendor":"zelon88","product":"HRConvert2","versions":[{"version":"< 3.3.8","status":"affected"}]}],"references":["https://github.com/zelon88/HRConvert2/security/advisories/GHSA-f74g-4wj8-j35h","https://github.com/zelon88/HRConvert2/releases/tag/v3.3.8"],"weaknesses":["CWE-78"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/44xxx/CVE-2026-44666.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-44666","state":"PUBLISHED","datePublished":"2026-05-14T20:32:43.490Z","dateUpdated":"2026-05-15T13:34:48.461Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-07T16:20:08.659Z"},"containers":{"cna":{"title":"HRConvert2: Missing Sanitization enables Unauthenticated Remote Command Execution","descriptions":[{"lang":"en","value":"HRConvert2 is a self-hosted, drag-and-drop & nosql file conversion server & share tool. Prior to 3.3.8, the sanitizeString() function in convertCore.php is missing backtick (`) and tab (\\t) from its strip list. User input then reaches shell_exec(), where the shell interprets these characters and commands within filenames execute. This vulnerability is fixed in 3.3.8."}],"affected":[{"vendor":"zelon88","product":"HRConvert2","versions":[{"version":"< 3.3.8","status":"affected"}]}],"references":[{"url":"https://github.com/zelon88/HRConvert2/security/advisories/GHSA-f74g-4wj8-j35h","name":"https://github.com/zelon88/HRConvert2/security/advisories/GHSA-f74g-4wj8-j35h","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/zelon88/HRConvert2/releases/tag/v3.3.8","name":"https://github.com/zelon88/HRConvert2/releases/tag/v3.3.8","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","subAvailabilityImpact":"LOW","baseScore":9.3,"baseSeverity":"CRITICAL","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-78","lang":"en","description":"CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-05-14T20:32:43.490Z"},"source":{"advisory":"GHSA-f74g-4wj8-j35h","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/zelon88/HRConvert2/security/advisories/GHSA-f74g-4wj8-j35h","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-15T13:34:44.637167Z","id":"CVE-2026-44666","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-15T13:34:48.461Z"}}]}}}