rsync before 3.5.0 contains an algorithmic complexity vulnerability in the hash_search() function that allows a remote attacker to cause a denial of service by delivering a carefully constructed file list. A sender can exploit the quadratic-time worst-case behavior in hash lookups to exhaust receiver CPU resources with a modest number of crafted entries, causing a sustained denial of service.
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Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Fri, 14 Aug 2026 10:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Rsync Project
Rsync Project rsync |
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| Vendors & Products |
Rsync Project
Rsync Project rsync |
Thu, 13 Aug 2026 15:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | rsync before 3.5.0 contains an algorithmic complexity vulnerability in the hash_search() function that allows a remote attacker to cause a denial of service by delivering a carefully constructed file list. A sender can exploit the quadratic-time worst-case behavior in hash lookups to exhaust receiver CPU resources with a modest number of crafted entries, causing a sustained denial of service. | |
| Title | rsync < 3.5.0 Algorithmic Complexity DoS via hash_search() | |
| Weaknesses | CWE-407 | |
| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-08-13T17:32:14.803Z
Reserved: 2026-08-04T14:52:23.814Z
Link: CVE-2026-70453
No data.
Status : Received
Published: 2026-08-13T15:19:58.893
Modified: 2026-08-13T18:18:15.193
Link: CVE-2026-70453
No data.
OpenCVE Enrichment
Updated: 2026-08-14T10:00:03Z
Weaknesses