CVE-2026-35585: File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files wit

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HIGH 7.2UPGRADE

CVE-2026-35585 is a high-severity flaw (CVSS 7.2) affecting filebrowser. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. From 2.0.0 until 2.33.8, the hook system in File Browser — which executes administrator-defined shell commands on file events such as upload, rename, and delete — is vulnerable to OS command injection. Variable substitution for values like $FILE and $USERNAME is performed via os.Expand without sanitization. An a

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	1.9% (top 20%)
CISA exploited list	No
Weakness	CWE-78, CWE-88
Published	2026-04-07
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: filebrowser

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-07 17:16 UTCPublished CVE record published
2026-06-17 10:40 UTCUpdated Record last modified

filebrowser filebrowser UPGRADE

Affected: >= 2.0.0 and <= 2.63.1

Fixed in: newer than 2.63.1

Safe to downgrade to: a release before 2.0.0

1. Check installed version

apt-cache policy filebrowser || rpm -q filebrowser || filebrowser --version

2. UPGRADE to newer than 2.63.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade filebrowser

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade filebrowser

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 2.0.0 (Debian / Ubuntu)

apt-cache madison filebrowser sudo apt install filebrowser=<VERSION_BEFORE_2.0.0> sudo apt-mark hold filebrowser

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list filebrowser sudo dnf downgrade filebrowser-<VERSION_BEFORE_2.0.0> sudo dnf versionlock add filebrowser

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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.

Quick answers

How do I fix CVE-2026-35585?

filebrowser: upgrade to newer than 2.63.1. Exact commands for each OS are on this page.

Is CVE-2026-35585 being exploited?

CVE-2026-35585 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-35585 affect?

CVE-2026-35585 affects filebrowser. Severity is high (CVSS 7.2). File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. From 2.0.0 until 2.33.8, the hook system in File Browser — which executes administrator-defined shell c

How urgent is CVE-2026-35585?

Priority 50/100. High severity; Public exploit reference

Related CVEs

CVE-2026-35607 HIGH 8.1 UPGRADE File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files wit
CVE-2026-35606 HIGH 7.5 UPGRADE File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files wit
CVE-2026-35605 HIGH 7.5 UPGRADE File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files wit
CVE-2026-35604 HIGH 8.1 UPGRADE File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files wit
CVE-2026-34530 MEDIUM 6.9 UPGRADE File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files wit

References

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