---
title: "CVE-2026-53801\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2026-53801?format=md
keywords: index, follow
---

# CVE-2026-53801

Publication date 13 August 2026

Last updated 19 August 2026

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**5.9 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2026-53801?format=md#impact-score)

Toggle side navigation

## Description

rsync before 3.5.0 contains a symlink race condition vulnerability in the
sender's directory scanning logic that allows attackers to cause the sender
to enumerate and transfer files outside the module root's intended subtree.
Attackers who can create or manipulate symlinks in a path component of the
scanned tree can replace a symlink with a directory entry pointing outside
the module root between the lstat() call and the subsequent opendir() call,
exposing files beyond the intended root in both daemon-mode and non-daemon
sender-side scanning.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| rsync | 26.04 LTS resolute | Needs evaluation |
| 24.04 LTS noble | Needs evaluation |
| 22.04 LTS jammy | Needs evaluation |
| 20.04 LTS focal | Needs evaluation |
| 18.04 LTS bionic | Needs evaluation |
| 16.04 LTS xenial | Needs evaluation |
| 14.04 LTS trusty | Needs evaluation |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:

CVSS v4.0

[CVSS v4.0](https://ubuntu.com/security/CVE-2026-53801?format=md)
[CVSS v3.0](https://ubuntu.com/security/CVE-2026-53801?format=md)

**Base score**

8.2 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | High |
  | Attack requirements | None |
  | Privileges required | None |
  | User interaction | None |
  | Vulnerable system - Confidentiality impact | High |
  | Vulnerable system - Integrity impact | None |
  | Vulnerable system - Availability impact | None |
  | Subsequent system - Confidentiality impact | None |
  | Subsequent system - Integrity impact | None |
  | Subsequent system - Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 8.2 · High |
  | Base + Threat score | - |
  | Base + Environmental score | - |
  | Base + Threat + Environmental score | - |

**Vector:** CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-53801)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-53801)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2026-53801)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2026-53801)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2026-53801>
* <https://download.samba.org/pub/rsync/NEWS#3.5.0>