CVE-2018-9209: Unauthenticated arbitrary file upload vulnerability in FineUploader php-traditional-server <= v1.2.2

Q: How do I fix CVE-2018-9209?

php-traditional-server: upgrade to newer than 1.2.2. Exact commands for each OS are on this page.

Q: Is CVE-2018-9209 being exploited?

CVE-2018-9209 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-9209 affect?

CVE-2018-9209 affects php-traditional-server. Severity is critical (CVSS 9.8). Unauthenticated arbitrary file upload vulnerability in FineUploader php-traditional-server <= v1.2.2

Q: How urgent is CVE-2018-9209?

Priority 64/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2018-9209 is a critical-severity flaw (CVSS 9.8) affecting php-traditional-server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unauthenticated arbitrary file upload vulnerability in FineUploader php-traditional-server <= v1.2.2

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.8% (top 21%)
CISA exploited list	No
Weakness	CWE-434
Published	2018-11-19
Last modified	2026-06-17

Publisher (CNA): Larry Cashdollar · Vendor: fineuploader

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

Am I affected?

Timeline

2018-11-19 18:29 UTCPublished CVE record published
2026-06-17 02:06 UTCUpdated Record last modified

fineuploader php-traditional-server UPGRADE

Affected: <= 1.2.2

Fixed in: newer than 1.2.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy php-traditional-server || rpm -q php-traditional-server || php-traditional-server --version

2. UPGRADE to newer than 1.2.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade php-traditional-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade php-traditional-server

Note

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

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-2018-9209?

php-traditional-server: upgrade to newer than 1.2.2. Exact commands for each OS are on this page.

Is CVE-2018-9209 being exploited?

CVE-2018-9209 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-2018-9209 affect?

CVE-2018-9209 affects php-traditional-server. Severity is critical (CVSS 9.8). Unauthenticated arbitrary file upload vulnerability in FineUploader php-traditional-server <= v1.2.2

How urgent is CVE-2018-9209?

Priority 64/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

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References

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