{"id":"CVE-2026-119741","aliases":["ALPINE-CVE-2026-119741","AZL-112646","BELL-CVE-2026-119741","DEBIAN-CVE-2026-119741","EUVD-2026-115914","GHSA-56w4-j8c7-xvrw","UBUNTU-CVE-2026-119741","openSUSE-SU-2026:12443-1"],"status":"published","title":"rsync \u003c 3.5.2 Denial of Service via hash_search() Checksum Collisions","description":"rsync before 3.5.2 contains a denial of service vulnerability in the delta-transfer sender's hash_search() in match.c that allows malicious receivers to trigger unbounded strong-checksum work at consecutive offsets. Unauthenticated attackers pulling from a public daemon module can supply weak checksums colliding with consecutive rolling windows plus non-matching strong checksums, exhausting sender CPU across concurrent connections.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00627,"percentile":0.50566,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-407"],"published":"2026-11-03T15:26:27Z","modified":"2026-11-11T07:30:05Z","fixes":[{"ecosystem":"Alpine:v3.21","package":"rsync","fixed_in":["3.5.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"rsync","fixed_in":["3.5.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"rsync","fixed_in":["3.5.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"rsync","fixed_in":["3.5.2-r0"],"sources":["osv"]},{"ecosystem":"Alpaquita:23","package":"rsync","fixed_in":["3.5.2-r1"],"sources":["osv"]},{"ecosystem":"Alpaquita:25","package":"rsync","fixed_in":["3.5.2-r1"],"sources":["osv"]},{"ecosystem":"Alpaquita:stream","package":"rsync","fixed_in":["3.5.2-r0"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"rsync","fixed_in":["3.5.0+ds1-0+deb12u1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"rsync","fixed_in":["3.5.2+ds1-1"],"sources":["osv"]},{"ecosystem":"openSUSE:Tumbleweed","package":"rsync","fixed_in":["3.5.2-1.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.21","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.2-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.22","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.2-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.2-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.2-r0"}]}]},{"source":"osv","ecosystem":"Azure Linux:3","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"3.5.1-1"}]}]},{"source":"osv","ecosystem":"Alpaquita:23","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.7-r0"},{"fixed":"3.5.2-r1"}]}]},{"source":"osv","ecosystem":"Alpaquita:25","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.4.1-r0"},{"fixed":"3.5.2-r1"}]}]},{"source":"osv","ecosystem":"Alpaquita:stream","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.5-r0"},{"fixed":"3.5.2-r0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.0+ds1-0+deb12u1"}]}],"versions":["3.2.7-1","3.2.7-1+deb12u1","3.2.7-1+deb12u2","3.2.7-1+deb12u3","3.2.7-1+deb12u4","3.2.7-1+deb12u5","3.2.7-1+deb12u6","3.3.0+ds1-1","3.3.0+ds1-2","3.3.0+ds1-3","3.3.0+ds1-4","3.3.0-1","3.4.1+ds1-1","3.4.1+ds1-2","3.4.1+ds1-3","3.4.1+ds1-4","3.4.1+ds1-4~exp1","3.4.1+ds1-4~exp2","3.4.1+ds1-5","3.4.1+ds1-5~exp1","3.4.1+ds1-6","3.4.1+ds1-7","3.4.1+ds1-8~exp1","3.4.2+ds1-1","3.4.2+ds1-2","3.4.3+ds1-1","3.4.3+ds1-2","3.4.4+ds1-1"]},{"source":"osv","ecosystem":"Debian:13","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.1+ds1-5","3.4.1+ds1-5+deb13u1","3.4.1+ds1-5+deb13u2","3.4.1+ds1-5+deb13u3","3.4.1+ds1-5+deb13u4","3.4.1+ds1-6","3.4.1+ds1-7","3.4.1+ds1-8~exp1","3.4.2+ds1-1","3.4.2+ds1-2","3.4.3+ds1-1","3.4.3+ds1-2","3.4.4+ds1-1","3.5.0+ds1-0+deb13u1","3.5.0+ds1-0+deb13u2","3.5.0+ds1-1","3.5.0+ds1-2","3.5.0+ds1-3","3.5.1+ds1-1","3.5.1+ds1-2","3.5.2+ds1-1","3.5.2+ds1-2"]},{"source":"osv","ecosystem":"Debian:14","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.2+ds1-1"}]}],"versions":["3.4.1+ds1-5","3.4.1+ds1-6","3.4.1+ds1-7","3.4.1+ds1-8~exp1","3.4.2+ds1-1","3.4.2+ds1-2","3.4.3+ds1-1","3.4.3+ds1-2","3.4.4+ds1-1","3.5.0+ds1-1","3.5.0+ds1-2","3.5.0+ds1-3","3.5.1+ds1-1","3.5.1+ds1-2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.9-4ubuntu1","3.1.0-2","3.1.0-2ubuntu0.1","3.1.0-2ubuntu0.2","3.1.0-2ubuntu0.3","3.1.0-2ubuntu0.4","3.1.0-2ubuntu0.4+esm1","3.1.0-2ubuntu0.4+esm2","3.1.0-2ubuntu0.4+esm3","3.1.0-2ubuntu0.4+esm4"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.1-3","3.1.1-3ubuntu1","3.1.1-3ubuntu1.1","3.1.1-3ubuntu1.2","3.1.1-3ubuntu1.3","3.1.1-3ubuntu1.3+esm1","3.1.1-3ubuntu1.3+esm2","3.1.1-3ubuntu1.3+esm3","3.1.1-3ubuntu1.3+esm4","3.1.1-3ubuntu1.3+esm5","3.1.1-3ubuntu1.3+esm6"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.2-2","3.1.2-2.1","3.1.2-2.1ubuntu1","3.1.2-2.1ubuntu1.1","3.1.2-2.1ubuntu1.2","3.1.2-2.1ubuntu1.3","3.1.2-2.1ubuntu1.4","3.1.2-2.1ubuntu1.5","3.1.2-2.1ubuntu1.6","3.1.2-2.1ubuntu1.6+esm1","3.1.2-2.1ubuntu1.6+esm2","3.1.2-2.1ubuntu1.6+esm3","3.1.2-2.1ubuntu1.6+esm4"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.3-6","3.1.3-8","3.1.3-8ubuntu0.1","3.1.3-8ubuntu0.2","3.1.3-8ubuntu0.3","3.1.3-8ubuntu0.4","3.1.3-8ubuntu0.5","3.1.3-8ubuntu0.7","3.1.3-8ubuntu0.8","3.1.3-8ubuntu0.9","3.1.3-8ubuntu0.9+esm1","3.1.3-8ubuntu0.9+esm2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.2.3-4ubuntu1","3.2.3-4ubuntu2","3.2.3-8ubuntu1","3.2.3-8ubuntu2","3.2.3-8ubuntu3","3.2.3-8ubuntu3.1","3.2.7-0ubuntu0.22.04.2","3.2.7-0ubuntu0.22.04.3","3.2.7-0ubuntu0.22.04.4","3.2.7-0ubuntu0.22.04.6","3.2.7-0ubuntu0.22.04.7"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.2.7-1","3.2.7-1build1","3.2.7-1build2","3.2.7-1ubuntu1","3.2.7-1ubuntu1.1","3.2.7-1ubuntu1.2","3.2.7-1ubuntu1.4","3.2.7-1ubuntu1.5"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.1+ds1-7","3.4.4+ds1-1","3.4.4+ds1-1build1","3.5.0+ds1-2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.1+ds1-5ubuntu1","3.4.1+ds1-6","3.4.1+ds1-7","3.4.1+ds1-7ubuntu0.2","3.4.1+ds1-7ubuntu0.3"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.2-1.1"}]}]}],"products":[{"vendor":"rsyncproject","product":"rsync"},{"vendor":"samba","product":"rsync"}],"references":[{"url":"https://github.com/RsyncProject/rsync/releases/tag/v3.5.2","tags":["release-notes","advisory"]},{"url":"https://github.com/RsyncProject/rsync/pull/1132","tags":["patch","issue-tracking","Issue Tracking","Patch","fix","report"]},{"url":"https://github.com/RsyncProject/rsync/commit/a7404a9a633cff28ee1602f328b9c3fa69cdbd04","tags":["patch","Patch","fix","report"]},{"url":"https://github.com/RsyncProject/rsync/blob/a7404a9a633cff28ee1602f328b9c3fa69cdbd04/testsuite/hashsearch-collision-skip_test.py","tags":["technical-description","Patch","article","report"]},{"url":"https://www.vulncheck.com/advisories/rsync-through-3.5.1-denial-of-service-via-hash-search-checksum-collisions","tags":["third-party-advisory","Third Party Advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119741","tags":["web","advisory"]},{"url":"https://github.com/RsyncProject/rsync","tags":["package","report"]},{"url":"https://github.com/advisories/GHSA-56w4-j8c7-xvrw"},{"url":"https://security.alpinelinux.org/vuln/CVE-2026-119741","tags":["advisory"]},{"url":"https://docs.bell-sw.com/security/cves/CVE-2026-119741","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/119xxx/CVE-2026-119741.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-119741","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-119741","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-119741","tags":["report"]},{"url":"https://github.com/RsyncProject/rsync/issues/1115","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-119741","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-119741","title":"rsync \u003c 3.5.2 Denial of Service via hash_search() Checksum Collisions","description":"rsync before 3.5.2 contains a denial of service vulnerability in the delta-transfer sender's hash_search() in match.c that allows malicious receivers to trigger unbounded strong-checksum work at consecutive offsets. Unauthenticated attackers pulling from a public daemon module can supply weak checksums colliding with consecutive rolling windows plus non-matching strong checksums, exhausting sender CPU across concurrent connections.","status":"published","published":"2026-11-03T15:26:27.533Z","modified":"2026-11-04T14:15:55.669Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-407"],"updated_at":"2026-11-04T15:32:52.167772Z"}],"euvd":[{"id":"EUVD-2026-115914","description":"rsync before 3.5.2 contains a denial of service vulnerability in the delta-transfer sender's hash_search() in match.c that allows malicious receivers to trigger unbounded strong-checksum work at consecutive offsets. Unauthenticated attackers pulling from a public daemon module can supply weak checksums colliding with consecutive rolling windows plus non-matching strong checksums, exhausting sender CPU across concurrent connections.","status":"published","published":"2026-11-03T15:26:27Z","modified":"2026-11-04T14:15:55Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-04T15:09:08.966365Z"}],"ghsa":[{"id":"GHSA-56w4-j8c7-xvrw","title":"rsync through 3.5.1 contains a denial of service vulnerability in the delta-transfer sender's...","description":"rsync through 3.5.1 contains a denial of service vulnerability in the delta-transfer sender's hash_search() in match.c that allows malicious receivers to trigger unbounded strong-checksum work at consecutive offsets. Unauthenticated attackers pulling from a public daemon module can supply weak checksums colliding with consecutive rolling windows plus non-matching strong checksums, exhausting sender CPU across concurrent connections.","status":"published","published":"2026-11-03T18:31:01Z","modified":"2026-11-03T18:31:01Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-407"],"updated_at":"2026-11-03T19:01:31.965978Z"}],"nvd":[{"id":"CVE-2026-119741","description":"rsync before 3.5.2 contains a denial of service vulnerability in the delta-transfer sender's hash_search() in match.c that allows malicious receivers to trigger unbounded strong-checksum work at consecutive offsets. Unauthenticated attackers pulling from a public daemon module can supply weak checksums colliding with consecutive rolling windows plus non-matching strong checksums, exhausting sender CPU across concurrent connections.","status":"published","published":"2026-11-03T16:17:21.94Z","modified":"2026-11-04T15:17:41.083Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-407"],"updated_at":"2026-11-04T18:06:26.557572Z"}],"osv":[{"id":"ALPINE-CVE-2026-119741","description":"rsync before 3.5.2 contains a denial of service vulnerability in the delta-transfer sender's hash_search() in match.c that allows malicious receivers to trigger unbounded strong-checksum work at consecutive offsets. Unauthenticated attackers pulling from a public daemon module can supply weak checksums colliding with consecutive rolling windows plus non-matching strong checksums, exhausting sender CPU across concurrent connections.","status":"published","published":"2026-11-03T16:17:21.94Z","modified":"2026-11-07T13:30:02.964815347Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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","level":"high"}],"updated_at":"2026-11-07T13:47:00.167603Z"},{"id":"BELL-CVE-2026-119741","status":"published","published":"2026-11-06T06:07:34.390642Z","modified":"2026-11-11T07:30:05.459551183Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-11T07:56:33.795851Z"},{"id":"CVE-2026-119741","title":"rsync \u003c 3.5.2 Denial of Service via hash_search() Checksum Collisions","description":"rsync before 3.5.2 contains a denial of service vulnerability in the delta-transfer sender's hash_search() in match.c that allows malicious receivers to trigger unbounded strong-checksum work at consecutive offsets. Unauthenticated attackers pulling from a public daemon module can supply weak checksums colliding with consecutive rolling windows plus non-matching strong checksums, exhausting sender CPU across concurrent connections.","status":"published","published":"2026-11-03T15:26:27.533Z","modified":"2026-11-06T17:27:31.874024025Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-407"],"updated_at":"2026-11-06T18:01:16.284314Z"},{"id":"DEBIAN-CVE-2026-119741","description":"rsync before 3.5.2 contains a denial of service vulnerability in the delta-transfer sender's hash_search() in match.c that allows malicious receivers to trigger unbounded strong-checksum work at consecutive offsets. Unauthenticated attackers pulling from a public daemon module can supply weak checksums colliding with consecutive rolling windows plus non-matching strong checksums, exhausting sender CPU across concurrent connections.","status":"published","published":"2026-11-03T16:17:21.94Z","modified":"2026-11-11T06:00:14.843691916Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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","level":"high"}],"updated_at":"2026-11-11T06:24:57.738571Z"},{"id":"UBUNTU-CVE-2026-119741","description":"rsync through 3.5.1 contains a denial of service vulnerability in the delta-transfer sender's hash_search() in match.c that allows malicious receivers to trigger unbounded strong-checksum work at consecutive offsets. Unauthenticated attackers pulling from a public daemon module can supply weak checksums colliding with consecutive rolling windows plus non-matching strong checksums, exhausting sender CPU across concurrent connections.","status":"published","published":"2026-11-03T16:17:00Z","modified":"2026-11-05T11:47:26.38021374Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"},{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-05T13:30:15.321876Z"},{"id":"AZL-112646","title":"CVE-2026-119741 affecting package rsync 3.5.1-1","description":"rsync before 3.5.2 contains a denial of service vulnerability in the delta-transfer sender's hash_search() in match.c that allows malicious receivers to trigger unbounded strong-checksum work at consecutive offsets. Unauthenticated attackers pulling from a public daemon module can supply weak checksums colliding with consecutive rolling windows plus non-matching strong checksums, exhausting sender CPU across concurrent connections.","status":"published","published":"2026-11-03T16:17:21Z","modified":"2026-11-05T14:17:01.056781131Z","updated_at":"2026-11-05T16:41:19.001909Z"},{"id":"openSUSE-SU-2026:12443-1","title":"rsync-3.5.2-1.1 on GA media","description":"These are all security issues fixed in the rsync-3.5.2-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-11-05T00:00:00Z","modified":"2026-11-06T17:23:10.622549508Z","updated_at":"2026-11-06T18:05:03.243497Z"}]}}