{"id":"CVE-2026-27175","state":"PUBLISHED","title":"MajorDoMo Command Injection in rc/index.php via Race Condition","description":"MajorDoMo (aka Major Domestic Module) is vulnerable to unauthenticated OS command injection via rc/index.php. The $param variable from user input is interpolated into a command string within double quotes without sanitization via escapeshellarg(). The command is inserted into a database queue by safe_exec(), which performs no sanitization. The cycle_execs.php script, which is web-accessible without authentication, retrieves queued commands and passes them directly to exec(). An attacker can exploit a race condition by first triggering cycle_execs.php (which purges the queue and enters a polling loop), then injecting a malicious command via the rc endpoint while the worker is polling. The injected shell metacharacters expand inside double quotes, achieving remote code execution within one second.","publishedAt":"2026-02-18T21:10:36.987Z","updatedAt":"2026-06-23T16:14:02.091Z","severity":{"score":9.2,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["sergejey MajorDoMo"],"affected":[{"vendor":"sergejey","product":"MajorDoMo","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThanOrEqual":"*","versionType":"custom"}]}],"references":["https://chocapikk.com/posts/2026/majordomo-revisited/","https://github.com/sergejey/majordomo/pull/1177","https://www.vulncheck.com/advisories/majordomo-command-injection-in-rcindexphp-via-race-condition"],"weaknesses":["CWE-78"],"ingestedAt":"2026-10-29T20:11:31.369Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/27xxx/CVE-2026-27175.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-27175","state":"PUBLISHED","datePublished":"2026-02-18T21:10:36.987Z","dateUpdated":"2026-06-23T16:14:02.091Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-02-18T15:22:30.053Z"},"containers":{"cna":{"title":"MajorDoMo Command Injection in rc/index.php via Race Condition","descriptions":[{"lang":"en","value":"MajorDoMo (aka Major Domestic Module) is vulnerable to unauthenticated OS command injection via rc/index.php. The $param variable from user input is interpolated into a command string within double quotes without sanitization via escapeshellarg(). The command is inserted into a database queue by safe_exec(), which performs no sanitization. The cycle_execs.php script, which is web-accessible without authentication, retrieves queued commands and passes them directly to exec(). An attacker can exploit a race condition by first triggering cycle_execs.php (which purges the queue and enters a polling loop), then injecting a malicious command via the rc endpoint while the worker is polling. The injected shell metacharacters expand inside double quotes, achieving remote code execution within one second."}],"affected":[{"vendor":"sergejey","product":"MajorDoMo","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThanOrEqual":"*","versionType":"custom"}]}],"references":[{"url":"https://chocapikk.com/posts/2026/majordomo-revisited/","name":"MajorDoMo Revisited: What I Missed in 2023","tags":["third-party-advisory"]},{"url":"https://github.com/sergejey/majordomo/pull/1177","name":"Fix PR: sergejey/majordomo#1177","tags":["issue-tracking"]},{"url":"https://www.vulncheck.com/advisories/majordomo-command-injection-in-rcindexphp-via-race-condition","name":"VulnCheck Advisory: MajorDoMo Command Injection in rc/index.php via Race Condition","tags":["third-party-advisory"]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":9.2,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS"},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-78","lang":"en","description":"Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-06-23T16:14:02.091Z"},"datePublic":"2026-02-17T00:00:00.000Z","cpeApplicability":[{"operator":"OR","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:sergejey:majordomo:*:*:*:*:*:*:*:*"}]}]}],"credits":[{"lang":"en","value":"Valentin Lobstein","type":"finder"}],"x_generator":{"engine":"vulncheck"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-26T16:20:08.943714Z","id":"CVE-2026-27175","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":"2026-02-26T16:20:26.742Z"}}]}}}