CVE-2026-70458: Out-of-bounds Write

rsync 3.0.0 before 3.5.0 contains an out-of-bounds write vulnerability that allows attackers to corrupt memory by triggering HLINKBUMP processing on file entries with the FLAGHLINKED flag set while the hard-link preservation option is inactive. Attackers can exploit the missing FSUM field in the...

CVE-2026-70459

rsync 3.0.0 before 3.5.0 contains a null pointer dereference vulnerability in the daemon child process that allows remote attackers to crash the daemon by sending a file list whose first entry is a dot entry not typed as a directory. The daemon dereferences the first file list entry as a director...

Linux Distros Unpatched Vulnerability : CVE-2026-53794

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - rsync before 3.5.0 contains a logic error in --max-alloc handling that allows a sender or configuration setting --max-alloc=0 to disable allocation sanity check...

PT-2026-71632

Name of the Vulnerable Software and Affected Versions rsync versions prior to 3.5.0 Description A logic error exists in the handling of the --max-alloc configuration. When a sender or configuration sets --max-alloc=0, allocation sanity checks are entirely disabled instead of enforcing a zero-byte...

PT-2026-71641

Name of the Vulnerable Software and Affected Versions rsync versions prior to 3.5.0 Description A symlink following issue exists where local attackers can overwrite arbitrary files by placing a symbolic link at a predictable output path. This occurs because the software fails to reject symlinks...

CVE-2026-53791: Authentication Bypass by Spoofing

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...

PT-2026-71659

Name of the Vulnerable Software and Affected Versions rsync versions 3.0.0 through 3.4.x Description A null pointer dereference occurs in the daemon child process. A remote attacker can cause the daemon to crash by sending a file list where the first entry is a dot entry not typed as a directory...

CVE-2026-70462: Integer Overflow or Wraparound

rsync 3.1.0 before 3.5.0 contains a signed integer overflow vulnerability in the I/O timeout implementation that allows attackers to permanently disable connection timeouts by injecting MSGIOTIMEOUT messages carrying non-positive zero or negative values. Attackers can craft malicious MSGIOTIMEOUT...

Linux Distros Unpatched Vulnerability : CVE-2026-53798

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - rsync before 3.5.0 contains a privilege confusion vulnerability in the name-converter subprocess uid/gid mapping that allows local attackers to cause transferre...

Linux Distros Unpatched Vulnerability : CVE-2026-53789

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - rsync before 3.5.0 contains an improper path handling vulnerability that allows a malicious sender to expand the scope of --delete operations beyond the intende...

Linux Distros Unpatched Vulnerability : CVE-2026-53803

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - rsync before 3.5.0 contains a symlink following vulnerability that allows local attackers to overwrite arbitrary files by placing a symlink at a predictable...

Linux Distros Unpatched Vulnerability : CVE-2026-70452

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - rsync 3.1.0 before 3.5.0 contains an access control bypass vulnerability that allows remote attackers to circumvent hosts deny rules by inducing DNS resolution...

Linux Distros Unpatched Vulnerability : CVE-2026-70458

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - rsync 3.0.0 before 3.5.0 contains an out-of-bounds write vulnerability that allows attackers to corrupt memory by triggering HLINKBUMP processing on file entrie...

PT-2026-71654

Name of the Vulnerable Software and Affected Versions rsync versions 3.2.0 through 3.2.3 rsync-ssl versions prior to 3.4.5 Description A TLS certificate validation issue allows on-path attackers to intercept encrypted sessions by presenting self-signed or invalid certificates. This occurs because...

CVE-2026-53802

rsync before 3.5.0 contains an arbitrary file read vulnerability that allows attackers to read files accessible to the rsync daemon process by exploiting symlink following in input configuration file handling including --files-from, --password-file, and filter merge files. Attackers can place a...

CVE-2026-53783

rsync before 3.5.0 contains a time-of-check to time-of-use TOCTOU race condition vulnerability in the rrsync restricted shell wrapper that allows authenticated clients to escape enforced directory restrictions by substituting a symlink for a path component after validation but before transfer...

CVE-2026-70452

rsync 3.1.0 before 3.5.0 contains an access control bypass vulnerability that allows remote attackers to circumvent hosts deny rules by inducing DNS resolution failures during hostname-based access control evaluation. When a DNS lookup for a hostname-based deny rule fails, the daemon skips the ru...

PT-2026-71626

Name of the Vulnerable Software and Affected Versions rsync versions prior to 3.5.0 Description A newline injection issue exists in the name-converter uid/gid mapping interface. Local attackers can forge protocol messages by creating user or group names that include newline characters. By injecti...

PT-2026-71663

Name of the Vulnerable Software and Affected Versions rsync versions 3.1.0 through 3.4.x Description An authorization bypass exists in the parsing of the auth users directive. The parser utilizes comma-only tokenization when splitting the user list, which fails to correctly process entries...

CVE-2026-53783: Improper Link Resolution Before File Access

rsync before 3.5.0 contains a time-of-check to time-of-use TOCTOU race condition vulnerability in the rrsync restricted shell wrapper that allows authenticated clients to escape enforced directory restrictions by substituting a symlink for a path component after validation but before transfer...