CVE-2023-28699: Wade Graphic Design FANTSY has a vulnerability of insufficient filtering for file type in its file update func

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HIGH 8.8DOWNGRADE

CVE-2023-28699 is a high-severity flaw (CVSS 8.8) affecting fantasy. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Wade Graphic Design FANTSY has a vulnerability of insufficient filtering for file type in its file update function. An authenticated remote attacker with general user privilege can exploit this vulnerability to upload a PHP file containing a webshell to perform arbitrary system operation or disrupt service.

Why this priority

High severity

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-434
Published	2023-06-02
Last modified	2026-06-17

Publisher (CNA): TWCERT/CC · Vendor: wddgroup

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

Am I affected?

Timeline

2023-06-02 11:15 UTCPublished CVE record published
2026-06-17 05:48 UTCUpdated Record last modified

wddgroup fantasy DOWNGRADE

Affected: 2.1.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.1.8

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.1.8 (Debian / Ubuntu)

apt-cache madison fantasy sudo apt install fantasy=<VERSION_BEFORE_2.1.8> sudo apt-mark hold fantasy

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

dnf --showduplicates list fantasy sudo dnf downgrade fantasy-<VERSION_BEFORE_2.1.8> sudo dnf versionlock add fantasy

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-2023-28699?

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

Is CVE-2023-28699 being exploited?

CVE-2023-28699 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-2023-28699 affect?

CVE-2023-28699 affects fantasy. Severity is high (CVSS 8.8). Wade Graphic Design FANTSY has a vulnerability of insufficient filtering for file type in its file update function. An authenticated remote attacker with general user privilege can exploit this vulnerability to upload a PHP file containing

How urgent is CVE-2023-28699?

Priority 45/100. High severity

Software pages

PHP vulnerabilities

References

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