CVE-2026-53790
rsync < 3.5.0 Command Injection via Multiple Code Paths
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.
INFO
Published Date :
Aug. 13, 2026, 3:19 p.m.
Last Modified :
Nov. 6, 2026, 4:01 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 4.0 | CRITICAL | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | CRITICAL | [email protected] |
Solution
- Update rsync to a secure version.
- Sanitize user-supplied input before using it.
- Restrict privileges for rsync processes.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-53790.
| URL | Resource |
|---|---|
| https://github.com/RsyncProject/rsync/releases/tag/v3.5.0 | Release Notes |
| https://github.com/RsyncProject/rsync/security/advisories/GHSA-5hcf-7xxm-rmqq | Vendor Advisory |
| https://www.vulncheck.com/advisories/rsync-command-injection-via-multiple-code-paths | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-53790 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-53790
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-53790 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-53790 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Nov. 06, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:samba:rsync:*:*:*:*:*:*:*:* versions up to (excluding) 3.5.0 Added Reference Type VulnCheck: https://github.com/RsyncProject/rsync/releases/tag/v3.5.0 Types: Release Notes Added Reference Type VulnCheck: https://github.com/RsyncProject/rsync/security/advisories/GHSA-5hcf-7xxm-rmqq Types: Vendor Advisory Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/rsync-command-injection-via-multiple-code-paths Types: Third Party Advisory -
CVE Translated by [email protected]
Oct. 24, 2026
Action Type Old Value New Value Changed Translation Title: rsync de RsyncProject, Description: rsync anterior a la versión 3.5.0 contiene múltiples vulnerabilidades de inyección de comandos y argumentos que permiten a los atacantes ejecutar comandos arbitrarios al proporcionar entrada maliciosa a través de varias rutas de código, incluyendo la variable de entorno RSYNC_CONNECT_PROG, los ganchos del demonio, el wrapper rsync-ssl y la inyección de nueva línea en comandos de shell remoto. Los atacantes pueden inyectar metacaracteres de shell o caracteres de nueva línea en valores proporcionados por el usuario no saneados, como nombres de host y hostspecs, para ejecutar comandos arbitrarios bajo los privilegios del proceso rsync o del usuario invocador. Title: rsync de RsyncProject, Description: rsync anterior a la versión 3.5.0 contiene múltiples vulnerabilidades de inyección de comandos y argumentos que permiten a los atacantes ejecutar comandos arbitrarios al proporcionar entrada maliciosa a través de varias rutas de código, incluyendo la variable de entorno RSYNC_CONNECT_PROG, los ganchos del demonio, el wrapper rsync-ssl y la inyección de nueva línea en comandos de shell remoto. Los atacantes pueden inyectar metacaracteres de shell o caracteres de nueva línea en valores proporcionados por el usuario no saneados, como nombres de host y hostspecs, para ejecutar comandos arbitrarios bajo los privilegios del proceso rsync o del usuario invocador. -
CVE Translated by [email protected]
Oct. 23, 2026
Action Type Old Value New Value Added Translation Title: rsync de RsyncProject, Description: rsync anterior a la versión 3.5.0 contiene múltiples vulnerabilidades de inyección de comandos y argumentos que permiten a los atacantes ejecutar comandos arbitrarios al proporcionar entrada maliciosa a través de varias rutas de código, incluyendo la variable de entorno RSYNC_CONNECT_PROG, los ganchos del demonio, el wrapper rsync-ssl y la inyección de nueva línea en comandos de shell remoto. Los atacantes pueden inyectar metacaracteres de shell o caracteres de nueva línea en valores proporcionados por el usuario no saneados, como nombres de host y hostspecs, para ejecutar comandos arbitrarios bajo los privilegios del proceso rsync o del usuario invocador. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 13, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-53790', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-13T15:33:06.968015Z'} -
New CVE Received by [email protected]
Aug. 13, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'RsyncProject', 'product': 'rsync', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '3.4.4'}, {'status': 'unaffected', 'version': '3.5.0', 'versionType': 'semver'}], 'collectionURL': 'https://github.com/RsyncProject/rsync', 'defaultStatus': 'unaffected'}] Added 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. Added CVSS V4.0 AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-78 Added CWE CWE-88 Added Reference https://github.com/RsyncProject/rsync/releases/tag/v3.5.0 Added Reference https://github.com/RsyncProject/rsync/security/advisories/GHSA-5hcf-7xxm-rmqq Added Reference https://www.vulncheck.com/advisories/rsync-command-injection-via-multiple-code-paths