CVE-2022-40050: ZFile v4.1.1 was discovered to contain an arbitrary file upload vulnerability via the component /file/upload/1

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2022-40050 is a critical-severity flaw (CVSS 9.8) affecting zfile. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ZFile v4.1.1 was discovered to contain an arbitrary file upload vulnerability via the component /file/upload/1.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 36%)
CISA exploited list	No
Weakness	CWE-434
Published	2022-09-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: zfile

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

Am I affected?

Timeline

2022-09-26 20:15 UTCPublished CVE record published
2026-06-17 05:00 UTCUpdated Record last modified

zfile zfile DOWNGRADE

Affected: 4.1.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.1.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.1.1 (Debian / Ubuntu)

apt-cache madison zfile sudo apt install zfile=<VERSION_BEFORE_4.1.1> sudo apt-mark hold zfile

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list zfile sudo dnf downgrade zfile-<VERSION_BEFORE_4.1.1> sudo dnf versionlock add zfile

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-2022-40050?

zfile: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-40050 being exploited?

CVE-2022-40050 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-2022-40050 affect?

CVE-2022-40050 affects zfile. Severity is critical (CVSS 9.8). ZFile v4.1.1 was discovered to contain an arbitrary file upload vulnerability via the component /file/upload/1.

How urgent is CVE-2022-40050?

Priority 60/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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