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CVE-2026-70453

rsync < 3.5.0 Algorithmic Complexity DoS via hash_search() PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
RsyncProject / rsyncaffected 0 through 3.4.4; unaffected 3.5.0

CWE

CWE-407

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.