CVE-2026-119741
highrsync 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 trigg…
Vendor / product: Samba — rsync
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.
CVSS
7.5
7.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-11-03 16:17
Modified: 2026-11-04 15:17
NVD status: Modified
Last synced 11 hours ago
Verified against the source API 2026-11-04 15:35 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
samba / rsync ≤3.5.1
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://github.com/RsyncProject/rsync/blob/a7404a9a633cff28ee1602f328b9c3fa69cdbd04/testsuite/hashsearch-collision-skip_test.py
Patch / mitigation: https://github.com/RsyncProject/rsync/commit/a7404a9a633cff28ee1602f328b9c3fa69cdbd04
Patch / mitigation: https://github.com/RsyncProject/rsync/pull/1132
References
- https://github.com/RsyncProject/rsync/blob/a7404a9a633cff28ee1602f328b9c3fa69cdbd04/testsu... disclosure@vulncheck.com
- https://github.com/RsyncProject/rsync/commit/a7404a9a633cff28ee1602f328b9c3fa69cdbd04 disclosure@vulncheck.com
- https://github.com/RsyncProject/rsync/pull/1132 disclosure@vulncheck.com
- https://github.com/RsyncProject/rsync/releases/tag/v3.5.2 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/rsync-through-3.5.1-denial-of-service-via-hash-search... disclosure@vulncheck.com
Data sources
NVD CVE API 2.0 — fetched 2026-11-04 15:35 UTC · record ↗