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VULNERABILITIES

CVE-2026-70453 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/RsyncProject/rsync/releases/tag/v3.5.0 [email protected]
https://github.com/RsyncProject/rsync/security/advisories/GHSA-8x5r-mjx8-83hv [email protected]
https://www.vulncheck.com/advisories/rsync-algorithmic-complexity-dos-via-hash-search [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-407Inefficient Algorithmic Complexity[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-70453
NVD Published Date:
Aug 13, 2026
NVD Last Modified:
Sep 8, 2026
Source:
[email protected]
CVE-2026-70453 Details - Not Deferred