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CVE-2026-53789: rsync before 3.5.0 contains an improper path handling vulnerability that allows a malicious sender to expand t

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Routine
MEDIUM 6.5UPGRADE

CVE-2026-53789 is a medium-severity flaw (CVSS 6.5) affecting rsync. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

rsync before 3.5.0 contains an improper path handling vulnerability that allows a malicious sender to expand the scope of --delete operations beyond the intended destination subtree by sending a crafted file list that causes rsync to reclassify implied parent directory entries or treat synthetic paths as the transfer root. Attackers can exploit multiple variants including implied parent reclassification, synthetic root path construction, legacy p

Why this priority

  • No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score6.5 (Medium)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionRequired
EPSS exploit chance0.4% (top 72%)
CISA exploited listNo
WeaknessCWE-807
Published2026-08-13
Last modified2026-10-23
Publisher (CNA): VulnCheck · Vendor: samba

Am I affected?

Timeline

samba rsync UPGRADE
Affected: < 3.5.0
Fixed in: 3.5.0
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy rsync || rpm -q rsync || rsync --version
2. UPGRADE to 3.5.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade rsync
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade rsync
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora 46 · diffoscope · FIXED · 335-1.fc46 · FEDORA-2026-e4c4cc0856 · source
sudo dnf upgrade --advisory=FEDORA-2026-e4c4cc0856
Debian 12 · rsync · NO FIX YET
Debian 13 · rsync · FIXED · 3.5.0+ds1-0+deb13u1
sudo apt update && sudo apt install --only-upgrade rsync dpkg --compare-versions "$(dpkg-query -W -f='${Version}' rsync)" ge "3.5.0+ds1-0+deb13u1" && echo PATCHED || echo STILL-VULNERABLE
RHEL 10 · rsync · FIXED · rsync-3.5.0-3.el10_2
sudo dnf upgrade --advisory=RHSA-2026:67463 rpm -q rsync
RHEL 8 · rsync · FIXED · rsync-3.1.3-28.el8_10
sudo dnf upgrade --advisory=RHSA-2026:74095 rpm -q rsync
RHEL 9 · rsync · FIXED · rsync-3.2.7-1.el9_8
sudo dnf upgrade --advisory=RHSA-2026:67462 rpm -q rsync
RHEL 6 · rsync · NO FIX YET
RHEL 7 · rsync · NO FIX YET
Alpine 3.21 · rsync · FIXED · rsync-3.5.0-r0
apk add --upgrade rsync apk info -v rsync
Alpine 3.22 · rsync · FIXED · rsync-3.5.0-r0
apk add --upgrade rsync apk info -v rsync
Alpine 3.23 · rsync · FIXED · rsync-3.5.0-r0
apk add --upgrade rsync apk info -v rsync
Alpine 3.24 · rsync · FIXED · rsync-3.5.0-r0
apk add --upgrade rsync apk info -v rsync
Amazon Linux 2023 · see advisory · FIXED · ALAS2023-2026-3131 · source
sudo dnf update --advisory=ALAS2023-2026-3131
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Related CVEs

References

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