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    CVE-2026-53788

    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 messages by creating user or group names containing newline characters. Attackers can inject malicious newline characters into names communicated over the pipe-based line-oriented protocol to cause the rsync daemon to process attacker-influenced data as legitimate protocol input, corrupting uid/gid mapping logic.

    Published:Aug 13, 2026
    Last Modified:Aug 14, 2026
    EPS:Aug 13, 2026
    EPSS Score:0.00251
    CVSS Score:6.5

    Affected Products

    Vendor
    Rsync Project
    Product
    Rsync
    Vendor
    Samba
    Product
    Rsync

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-15 Command Delimiters
    CAPEC-81 Web Server Logs Tampering

    Related CVEs

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    CVE-2026-70455 (CVSS 8.7) — rsync 3.4.2 before 3.5.0 contains a denial of service vulnerability that allows a remote sender to exhaust sys…
    CVE-2026-70456 (CVSS 8.8) — rsync 3.0.1 before 3.5.0 contains an out-of-bounds write vulnerability in the read_args() function that allows…
    CVE-2026-70457 (CVSS 8.3) — rsync 3.2.3 before 3.5.0 contains an out-of-bounds write in parse_size_arg() where the return value of snprint…
    CVE-2026-70458 (CVSS 8.8) — rsync 3.0.0 before 3.5.0 contains an out-of-bounds write vulnerability that allows attackers to corrupt memory…
    CVE-2026-70459 (CVSS 6.9) — rsync 3.0.0 before 3.5.0 contains a null pointer dereference vulnerability in the daemon child process that al…
    CVE-2026-70460 (CVSS 9.2) — rsync 2.3.3 before 3.5.0 contains a path traversal vulnerability that allows a malicious sender to escape the …
    CVE-2026-70461 (CVSS 8.8) — rsync 3.2.5 before 3.5.0 contains a heap out-of-bounds write vulnerability that allows remote unauthenticated …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High