CVE-2026-41035
"Rsync Use-After-Free Vulnerability"
Description
In rsync 3.0.1 through 3.4.1, receive_xattr relies on an untrusted length value during a qsort call, leading to a receiver use-after-free. The victim must run rsync with -X (aka --xattrs). On Linux, many (but not all) common configurations are vulnerable. Non-Linux platforms are more widely vulnerable.
INFO
Published Date :
April 16, 2026, 7:16 a.m.
Last Modified :
May 21, 2026, 7:23 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 8254265b-2729-46b6-b9e3-3dfca2d5bfca | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update rsync to a patched version.
- Ensure xattrs are handled securely.
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-2026-41035.
| URL | Resource |
|---|---|
| https://github.com/RsyncProject/rsync/issues/871 | Issue Tracking |
| https://github.com/RsyncProject/rsync/releases | Release Notes |
| https://www.openwall.com/lists/oss-security/2026/04/16/2 | Exploit Mailing List Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2026/04/16/9 | Mailing List Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2026/04/22/3 | Mailing List 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-2026-41035 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-2026-41035
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-2026-41035 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-41035 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]
May. 21, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:samba:rsync:*:*:*:*:*:*:*:* versions from (including) 3.0.1 up to (including) 3.4.1 Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2026/04/16/9 Types: Mailing List, Third Party Advisory Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2026/04/22/3 Types: Mailing List, Third Party Advisory Added Reference Type MITRE: https://github.com/RsyncProject/rsync/issues/871 Types: Issue Tracking Added Reference Type MITRE: https://github.com/RsyncProject/rsync/releases Types: Release Notes Added Reference Type MITRE: https://www.openwall.com/lists/oss-security/2026/04/16/2 Types: Exploit, Mailing List, Third Party Advisory -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Apr. 22, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2026/04/22/3 -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Apr. 16, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2026/04/16/9 -
New CVE Received by [email protected]
Apr. 16, 2026
Action Type Old Value New Value Added Description In rsync 3.0.1 through 3.4.1, receive_xattr relies on an untrusted length value during a qsort call, leading to a receiver use-after-free. The victim must run rsync with -X (aka --xattrs). On Linux, many (but not all) common configurations are vulnerable. Non-Linux platforms are more widely vulnerable. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L Added CWE CWE-130 Added Reference https://github.com/RsyncProject/rsync/issues/871 Added Reference https://github.com/RsyncProject/rsync/releases Added Reference https://www.openwall.com/lists/oss-security/2026/04/16/2