9.1
Critical
CVE-2026-53791 rsync daemon before 3.5.0 contains an IP address spoofing vulnerability that allows unauthenticated remote attackers…
Description
rsync daemon before 3.5.0 contains an IP address spoofing vulnerability that allows unauthenticated remote attackers to bypass IP-based access controls by sending a crafted PROXY protocol header with a forged source address. Attackers who can connect directly to the rsync daemon can inject a spoofed source IP in the PROXY protocol header to circumvent hosts allow/deny rules, gaining unauthorized access that would otherwise be blocked based on their real source address.
Affected products and versions
Other CVEs of rsync
The 44 CVEs of rsync →
CVE-2026-119741
rsync < 3.5.2 Denial of Service via hash_search() Checksum Collisions
8.7
High
CVE-2026-70452
rsync 3.1.0 before 3.5.0 contains an access control bypass vulnerability that allows remote attackers to circumvent…
9.1
Critical
CVE-2026-70453
rsync before 3.5.0 contains an algorithmic complexity vulnerability in the hash_search() function that allows a remote…
8.7
High
CVE-2026-70454
rsync 3.2.0 through 3.2.3 (openssl mode) and rsync-ssl through 3.4.4 (stunnel mode) contain a TLS certificate validation…
7.6
High