{"affected":[{"defaultStatus":"unaffected","ecosystem":"github","packageName":"RsyncProject/rsync","product":"rsync","source":"CNA: VulnCheck","vendor":"RsyncProject","versions":[{"lessThanOrEqual":"3.5.1","status":"affected","version":"0","versionType":"semver"}]}],"cveId":"CVE-2026-119741","cwes":["CWE-407"],"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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":8.7,"severity":"high","source":"CNA: VulnCheck","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","version":"4.0"},{"score":7.5,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},{"score":8.7,"severity":"high","source":"NVD: disclosure@vulncheck.com","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","version":"4.0"},{"score":7.5,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1793726287287,"publishedAt":1793719587533,"references":[{"source":"CNA: VulnCheck","tags":["issue-tracking","patch"],"url":"https://github.com/RsyncProject/rsync/pull/1132"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/RsyncProject/rsync/commit/a7404a9a633cff28ee1602f328b9c3fa69cdbd04"},{"source":"CNA: VulnCheck","tags":["product"],"url":"https://github.com/RsyncProject/rsync"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/RsyncProject/rsync/blob/a7404a9a633cff28ee1602f328b9c3fa69cdbd04/testsuite/hashsearch-collision-skip_test.py"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/rsync-through-3.5.1-denial-of-service-via-hash-search-checksum-collisions"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/RsyncProject/rsync"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/RsyncProject/rsync/blob/a7404a9a633cff28ee1602f328b9c3fa69cdbd04/testsuite/hashsearch-collision-skip_test.py"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/RsyncProject/rsync/commit/a7404a9a633cff28ee1602f328b9c3fa69cdbd04"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/RsyncProject/rsync/pull/1132"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/rsync-through-3.5.1-denial-of-service-via-hash-search-checksum-collisions"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/RsyncProject/rsync/pull/1132"},{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/RsyncProject/rsync/commit/a7404a9a633cff28ee1602f328b9c3fa69cdbd04"}],"revision":"9ec54c81de12816e530fddbbb51bb63de2ca8373b627e35d4dc46e1e680b422e","sources":[{"modifiedAt":1793724252242,"name":"CNA: VulnCheck","retrievedAt":1793725874976,"url":"https://www.cve.org/CVERecord?id=CVE-2026-119741"},{"modifiedAt":1793726287287,"name":"NVD","retrievedAt":1793730097093,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119741"}],"ssvc":{"assessedAt":1793724221930,"automatable":"yes","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"rsync through 3.5.1 Denial of Service via hash_search() Checksum Collisions","updatedAt":1793730097093}