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...

PT-2026-71635

Name of the Vulnerable Software and Affected Versions rsync versions prior to 3.5.0 Description A symlink race condition exists in the sender's source tree traversal. An attacker capable of manipulating a parent directory of the source tree can redirect file reads to unintended paths. This is...

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...

PT-2026-71658

Name of the Vulnerable Software and Affected Versions rsync versions 3.0.0 through 3.4.x Description An out-of-bounds write occurs when triggering HLINK BUMP processing on file entries that have the FLAG HLINKED flag set while the hard-link preservation option is inactive. This happens because th...

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-2026-53795

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-2026-70463: 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...

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...

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...

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-2026-71633

Name of the Vulnerable Software and Affected Versions rsync versions prior to 3.5.0 Description An arbitrary file write issue exists where attackers can write files outside the intended destination tree. This occurs by specifying an absolute path through the --temp-dir or --link-dest options, whi...

PT-2026-71636

Name of the Vulnerable Software and Affected Versions rsync versions prior to 3.5.0 Description A privilege confusion issue exists in the name-converter subprocess uid/gid mapping. Local attackers can cause transferred files to be owned by root by influencing the name-converter responses to retur...

Slackware Linux 15.0 / current rsync Vulnerability (SSA:2026-225-01)

The version of rsync installed on the remote host is prior to 3.5.0. It is, therefore, affected by a vulnerability as referenced in the SSA:2026-225-01 advisory. New rsync packages are available for Slackware 15.0 and -current to fix security issues. Tenable has extracted the preceding descriptio...

CVE-2026-70457: Incorrect Calculation of Buffer Size

rsync 3.2.3 before 3.5.0 contains an out-of-bounds write in parsesizearg where the return value of snprintf is used directly as an index into a .bss-segment array without bounds checking. When snprintf truncates the formatted size string, the return value equals the number of characters that woul...

CVE-2026-70461: Out-of-bounds Write

rsync 3.2.5 before 3.5.0 contains a heap out-of-bounds write vulnerability that allows remote unauthenticated attackers to write one attacker-controlled byte past the end of a heap allocation by supplying a crafted files-from entry. Attackers can trigger the vulnerability against a read-only rsyn...

Linux Distros Unpatched Vulnerability : CVE-2026-53788

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 newline injection vulnerability in the name-converter uid/gid mapping interface that allows local attackers to forge protocol...

Linux Distros Unpatched Vulnerability : CVE-2026-70464

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

Linux Distros Unpatched Vulnerability : CVE-2026-70463

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 authorization bypass in auth users directive parsing. The auth users parser uses comma-only tokenization when splitting the...

Linux Distros Unpatched Vulnerability : CVE-2026-70453

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 algorithmic complexity vulnerability in the hashsearch function that allows a remote attacker to cause a denial of service by...

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...