TI-2026-31724 Aliases CVE-2026-43619 GHSA-pwrq-5rj3-c43m

Rsync < 3.4.3 Symlink Race Condition via Path-Based Syscalls

LOW 33CWE-367Published 2026-05-20 · Updated 2026-11-08

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: High
Attack requirements: Present
Impact type: —
Confidentiality · integrity · availability: High · High · None
Fix status: Partial Red Hat: 7 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.

Summary

Rsync version 3.4.2 and prior contain symlink race condition vulnerabilities in path-based system calls including chmod, lchown, utimes, rename, unlink, mkdir, symlink, mknod, link, rmdir, and lstat that allow local attackers to redirect operations to files outside the exported rsync module. Attackers with local filesystem access can exploit the timing window between path resolution and syscall execution by swapping symlinks to apply sender-supplied permissions, ownership, timestamps, or filenames to arbitrary files outside the intended module boundary on rsync daemons configured with 'use chroot = no'.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00136 3rd percentileScored 2026-11-07

Fix Partial rsync (RsyncProject): 3.4.3Red Hat: 7 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Samba	rsync	before 3.4.3	3.4.3	Patch available	CNA

rsync VendorSamba Affected before 3.4.3 Fixed in 3.4.3 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:samba:rsync::::::::	up to 3.4.2	Vulnerable	Samba

cpe:2.3:a:samba:rsync:*:*:*:*:*:*:*:* Versions up to 3.4.2 Vulnerable ·Samba

Remediation

Fix · CNA rsync (RsyncProject) Fixed in 3.4.3

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-05-20
RsyncProject rsync 3.4.3
6 records Highest priority Priority LOW 6 LOW
Other records, highest priority first
- TI-2026-23333 Rsync < 3.4.3 TOCTOU Race Condition Allows Symlink-Based Arbitrary File WritePriority LOW 33
- TI-2026-31725 Rsync < 3.4.3 Out-of-Bounds Array Read via recv_files()Priority LOW 31
- TI-2026-31723 Rsync < 3.4.3 Integer Overflow Information DisclosurePriority LOW 31
Show all 6 records →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux 10	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 6	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 7	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 8	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 9	Affected	No fix yet: Fix deferred
Red Hat OpenShift AI (RHOAI)	Affected	—
Red Hat OpenShift Container Platform 4	Affected	No fix yet: Fix deferred

Timeline

2026-10-02 Threatist record created from CVE-2026-43619
2026-10-03 Alias added: GHSA-pwrq-5rj3-c43m
2026-11-06 Affected versions changed · Red Hat

References

Advisory 1

GitHub Security Advisory (GHSA-4h9m-w5ff-j735)

Other 1

rsync 3.4.3 Release Notes

TI-2024-11208 Rsync: heap buffer overflow in rsync due to improper checksum length handling CVSS 3.1CRITICAL 9.8
TI-2024-11209 Rsync: info leak via uninitialized stack contents CVSS 3.1HIGH 7.5
TI-2024-11212 Rsync: --safe-links option bypass leads to path traversal CVSS 3.1HIGH 7.5
TI-2024-11211 Rsync: path traversal vulnerability in rsync CVSS 3.1HIGH 7.5
TI-2024-11210 Rsync: rsync server leaks arbitrary client files CVSS 3.1MEDIUM 6.8
TI-2017-12160 The receive_xattr function in xattrs.c in rsync 3.1.2 and 3.1.3-development does not… CVSS 3.1CRITICAL 9.8

See all 56 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences