CVE-2026-33477: FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations

Routine

MEDIUM 4.3UPGRADE

CVE-2026-33477 is a medium-severity flaw (CVSS 4.3) affecting filerise. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. In versiosn 2.3.7 through 3.10.0, the file snippet endpoint `/api/file/snippet.php` allows an authenticated user with only `read_own` access to a folder to retrieve snippet content from files uploaded by other users in the same folder. This is a server-side authorization flaw in the `read_own` enforcement for hover previews. Version 3.11.0 fixe

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 86%)
CISA exploited list	No
Weakness	CWE-863
Published	2026-03-26
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2026-03-26 18:16 UTCPublished CVE record published
2026-06-17 10:37 UTCUpdated Record last modified

filerise filerise UPGRADE

Affected: >= 2.3.7 and < 3.11.0

Fixed in: 3.11.0

Safe to downgrade to: a release before 2.3.7

1. Check installed version

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

2. UPGRADE to 3.11.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade filerise

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 2.3.7 (Debian / Ubuntu)

apt-cache madison filerise sudo apt install filerise=<VERSION_BEFORE_2.3.7> sudo apt-mark hold filerise

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

dnf --showduplicates list filerise sudo dnf downgrade filerise-<VERSION_BEFORE_2.3.7> sudo dnf versionlock add filerise

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-2026-33477?

filerise: upgrade to 3.11.0. Exact commands for each OS are on this page.

Is CVE-2026-33477 being exploited?

CVE-2026-33477 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-2026-33477 affect?

CVE-2026-33477 affects filerise. Severity is medium (CVSS 4.3). FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. In versiosn 2.3.7 through 3.10.0, the file snippet endpoint `/api/file/snippet.php` allows an authenticated user with only `read_own` ac

How urgent is CVE-2026-33477?

Priority 24/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2026-33330 HIGH 7.1 UPGRADE FileRise is a self-hosted web file manager / WebDAV server
CVE-2026-33329 HIGH 8.1 UPGRADE FileRise is a self-hosted web file manager / WebDAV server
CVE-2026-33072 HIGH 8.2 UPGRADE FileRise is a self-hosted web file manager / WebDAV server
CVE-2026-33071 MEDIUM 4.3 UPGRADE FileRise is a self-hosted web file manager / WebDAV server
CVE-2026-33070 LOW 3.7 UPGRADE FileRise is a self-hosted web file manager / WebDAV server

References

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