Linux Distros Unpatched Vulnerability : CVE-2026-70455

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - rsync 3.4.2 before 3.5.0 contains a denial of service vulnerability that allows a remote sender to exhaust system resources by specifying the --zt short alias f...

Linux Distros Unpatched Vulnerability : CVE-2026-70462

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 a signed integer overflow vulnerability in the I/O timeout implementation that allows attackers to permanently disable...

CVE-2026-53797: Improper Link Resolution Before File Access

rsync before 3.5.0 contains a symlink race condition vulnerability in the sender's source tree traversal that allows an attacker who can manipulate a parent directory of the source tree to redirect file reads to unintended paths. Attackers can atomically replace a parent directory component with ...

PT-2026-71653

Name of the Vulnerable Software and Affected Versions rsync versions prior to 3.5.0 Description An algorithmic complexity issue exists in the hash search function. A remote attacker can trigger a denial of service by sending a carefully constructed file list. This exploit leverages quadratic-time...

PT-2026-71634

Name of the Vulnerable Software and Affected Versions rsync versions prior to 3.5.0 Description A time-of-check to time-of-use TOCTOU race condition exists in the non-daemon receiver's destination directory handling. This occurs when an attacker manipulates parent components of the destination pa...

PT-2026-71661

Name of the Vulnerable Software and Affected Versions rsync versions 3.2.5 through 3.4.x Description A heap out-of-bounds write allows remote unauthenticated attackers to write one attacker-controlled byte past the end of a heap allocation. This occurs when a crafted files-from entry containing...

CVE-2026-70454: Improper Certificate Validation

rsync 3.2.0 through 3.2.3 openssl mode and rsync-ssl through 3.4.4 stunnel mode contain a TLS certificate validation vulnerability that allows on-path attackers to intercept encrypted sessions by presenting self-signed or otherwise invalid certificates. Attackers can exploit the failure to valida...

CVE-2026-70452: Incorrect Authorization

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...

CVE-2026-70453: Inefficient Algorithmic Complexity

rsync before 3.5.0 contains an algorithmic complexity vulnerability in the hashsearch 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 receive...

CVE-2026-70460: Improper Limitation of a Pathname to a Restricted Directory

rsync 2.3.3 before 3.5.0 contains a path traversal vulnerability that allows a malicious sender to escape the module root by exploiting symlinks within the module file tree when using --partial-dir or --backup-dir options. Attackers with write access to place a symlink under the module root, or w...

CVE-2026-70456: Out-of-bounds Write

rsync 3.0.1 before 3.5.0 contains an out-of-bounds write vulnerability in the readargs function that allows a malicious sender to corrupt adjacent heap memory by sending a crafted argument list. When the argument count causes the argv allocation to be exactly full, the trailing NULL terminator is...

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-2026-70464: Allocation of Resources Without Limits or Throttling

rsync daemon 2.0.0 before 3.5.0 contains a denial of service vulnerability that allows unauthenticated remote attackers to exhaust daemon connection slots by stalling the handshake process before or after module selection without triggering the I/O timeout. Attackers can open many simultaneous...

CVE-2026-70463: Incorrect Authorization

rsync 3.1.0 before 3.5.0 contains an authorization bypass in auth users directive parsing. The auth users parser uses comma-only tokenization when splitting the user list, which fails to correctly handle entries of the form @Group Name where the group name contains a space. The space within the...

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...

CVE-2026-53790: Improper Neutralization of Special Elements used in an OS Command

rsync before 3.5.0 contains multiple command and argument injection vulnerabilities that allow attackers to execute arbitrary commands by supplying malicious input through several code paths, including the RSYNCCONNECTPROG environment variable, daemon hooks, the rsync-ssl wrapper, and remote-shel...

CVE-2026-53789: Reliance on Untrusted Inputs in a Security Decision

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 intended destination subtree by sending a crafted file list that causes rsync to reclassify implied parent directory entries or treat synthetic...

CVE-2026-53795: Improper Link Resolution Before File Access

rsync before 3.5.0 contains an arbitrary file write vulnerability that allows attackers to write files outside the intended destination tree by specifying an absolute path via --temp-dir or --link-dest options. The rename-confinement logic is bypassed when these options resolve to paths outside t...

CVE-2026-53793: Improper Link Resolution Before File Access

rsync before 3.5.0 contains a path confinement bypass vulnerability that allows remote clients to escape the intended inner-module root confinement by constructing paths that resolve outside the chroot boundary when the module root contains a /./ boundary marker. Attackers can exploit improper...

CVE-2026-53803: Improper Link Resolution Before File Access

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 output path such as --log-file, --write-batch, or daemon-mode log and statistics paths. Attackers can exploit rsync's failure to reject...