{"schemaVersion":3,"id":"CVE-2026-53790","aliases":["ALPINE-CVE-2026-53790","UBUNTU-CVE-2026-53790","DEBIAN-CVE-2026-53790"],"status":"published","duplicateOf":null,"title":null,"description":"rsync before 3.5.0 contains multiple command and argument injection vulnerabilities that allow attackers to execute arbitrary commands by supplying malicious input through several code paths, including the RSYNC_CONNECT_PROG environment variable, daemon hooks, the rsync-ssl wrapper, and remote-shell command newline injection. Attackers can inject shell metacharacters or newline characters into unsanitized user-supplied values such as hostnames and hostspecs to execute arbitrary commands under the privileges of the rsync process or the invoking user.","dates":{"published":"2026-08-13T14:37:41.052Z","modified":"2026-08-14T16:50:08.531Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.2,"severity":"critical","version":"4.0","versionLabel":"v4.0","source":"CVE.org","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":9.2,"severity":"critical","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":8.1,"severity":"high","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Alpine","score":9.2,"severity":"critical","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Ubuntu","score":9.2,"severity":"critical","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":8.1,"severity":"high","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":5.6,"impact":9.8,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Debian","score":9.2,"severity":"critical","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":9.2,"severity":"critical","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":8.1,"severity":"high","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00629,"percentile":0.49197,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0.11399999999999995,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00515},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00515,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00515,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00515,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00515,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00515,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00515,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00515,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00515,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00515,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00515,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00701,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00701,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00701,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00701,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00701,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00701,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00629,"percentile":0.49197}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00515,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00515,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00515,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00515,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00701,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00701,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00701,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00701,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00701,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00701,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00629,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00629,"percentile":0.49197}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-78","name":"Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","description":"The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/78.html"},{"id":"CWE-88","name":"Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')","description":"The product constructs a string for a command to be executed by a separate component\nin another control sphere, but it does not properly delimit the\nintended arguments, options, or switches within that command string.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/88.html"}],"affected":[{"vendor":"alpine","product":"rsync","name":"rsync","label":"rsync","ecosystem":"Alpine Linux","cpePart":null,"purl":"pkg:apk/alpine/rsync","purlType":"apk","versions":[{"text":"< 3.5.0-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.5.0-r0","eol":null,"hubHref":null},{"vendor":"debian","product":"rsync","name":"rsync","label":"rsync","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/rsync","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 3.5.0+ds1-0+deb13u1","noFixRecorded":false,"fixedIn":null},{"text":"< 3.5.0+ds1-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 3.5.0+ds1-0+deb13u1 | < 3.5.0+ds1-1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"rsync","name":"rsync","label":"rsync","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/rsync","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"rsyncproject","product":"rsync","name":"rsync","label":"rsync","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 3.4.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 3.4.4","eol":null,"hubHref":"/vendor/rsyncproject/rsync"}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/RsyncProject/rsync/security/advisories/GHSA-5hcf-7xxm-rmqq","label":"github.com/RsyncProject/rsync/security/advisories/GHSA-5hcf-7xxm-rmqq","hostname":"github.com","tags":["Vendor Advisory"]},{"url":"https://github.com/RsyncProject/rsync/releases/tag/v3.5.0","label":"github.com/RsyncProject/rsync/releases/tag/v3.5.0","hostname":"github.com","tags":["Release Notes"]},{"url":"https://www.vulncheck.com/advisories/rsync-command-injection-via-multiple-code-paths","label":"www.vulncheck.com/advisories/rsync-command-injection-via-multiple-code-paths","hostname":"www.vulncheck.com","tags":["Third Party Advisory"]},{"url":"https://security.alpinelinux.org/vuln/CVE-2026-53790","label":"security.alpinelinux.org/vuln/CVE-2026-53790","hostname":"security.alpinelinux.org","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-53790","label":"ubuntu.com/security/CVE-2026-53790","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53790","label":"www.cve.org/CVERecord?id=CVE-2026-53790","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://download.samba.org/pub/rsync/NEWS#3.5.0","label":"download.samba.org/pub/rsync/NEWS","hostname":"download.samba.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-53790","label":"security-tracker.debian.org/tracker/CVE-2026-53790","hostname":"security-tracker.debian.org","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53790","label":"nvd.nist.gov/vuln/detail/CVE-2026-53790","hostname":"nvd.nist.gov","tags":["Oval","Advisory"]}],"lineage":{"upstream":[],"downstream":["MGASA-2026-0487","OPENSUSE-SU-2026:11869-1","OPENSUSE-SU-2026:21650-1","RHSA-2026:67462","RHSA-2026:67463","RHSA-2026:74095","SUSE-SU-2026:23253-1","SUSE-SU-2026:23254-1","SUSE-SU-2026:23289-1","SUSE-SU-2026:23323-1","SUSE-SU-2026:3634-1","SUSE-SU-2026:3657-1"],"duplicates":[],"related":["OPENSUSE-SU-2026:11869-1","OPENSUSE-SU-2026:21650-1","SUSE-SU-2026:23253-1","SUSE-SU-2026:23254-1","SUSE-SU-2026:23289-1","SUSE-SU-2026:23323-1","SUSE-SU-2026:3634-1","SUSE-SU-2026:3657-1"]},"timeline":[{"kind":"published","date":"2026-08-13T14:37:41.052Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-08-14T16:50:08.531Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T16:18:18.953Z","stale":false,"partial":false}}