CVE-2026-53790: CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in RsyncProject rsync
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 RSYNC_CONNECT_PROG environment variable, daemon hooks, the rsync-ssl wrapper, and remote-shell command newline injection. Attackers can inject shell metacharacters or newline characters into unsanitized user-supplied values such as hostnames and hostspecs to execute arbitrary commands under the privileges of the rsync process or the invoking user.
CVE-2026-53790: CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in RsyncProject rsync
Description
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 RSYNC_CONNECT_PROG environment variable, daemon hooks, the rsync-ssl wrapper, and remote-shell command newline injection. Attackers can inject shell metacharacters or newline characters into unsanitized user-supplied values such as hostnames and hostspecs to execute arbitrary commands under the privileges of the rsync process or the invoking user.
CVSS v4.0
Score 9.2critical
Affected software
RsyncProject
rsync
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Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-06-10T20:14:32.827Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a7ddec4bf8831d5395cfc92
Added to database: 08/13/2026, 15:12:04 UTC
Last enriched: 08/13/2026, 15:45:28 UTC
Last updated: 09/28/2026, 01:47:43 UTC
Views: 62
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