CVE-2025-5499: A vulnerability classified as critical has been found in slackero phpwcms up to 1.9.45/1.10.8

This week

HIGH 7.3REMOTEUPGRADE

CVE-2025-5499 is a high-severity flaw (CVSS 7.3) affecting phpwcms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability classified as critical has been found in slackero phpwcms up to 1.9.45/1.10.8. Affected is the function is_file/getimagesize of the file image_resized.php. The manipulation of the argument imgfile leads to deserialization. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.9.46 and 1.10.9 is able to address this issue. It is recommended to upgrade the

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	7.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-20, CWE-502
Published	2025-06-03
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: phpwcms

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

Am I affected?

Timeline

2025-06-03 14:15 UTCPublished CVE record published
2026-06-17 09:48 UTCUpdated Record last modified

phpwcms phpwcms UPGRADE

Affected: < 1.9.46 · >= 1.10.2 and < 1.10.9

Fixed in: 1.9.46, 1.10.9

Safe to downgrade to: a release before 1.10.2

1. Check installed version

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

2. UPGRADE to 1.9.46 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade phpwcms

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 1.10.2 (Debian / Ubuntu)

apt-cache madison phpwcms sudo apt install phpwcms=<VERSION_BEFORE_1.10.2> sudo apt-mark hold phpwcms

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

dnf --showduplicates list phpwcms sudo dnf downgrade phpwcms-<VERSION_BEFORE_1.10.2> sudo dnf versionlock add phpwcms

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-2025-5499?

phpwcms: upgrade to 1.9.46, 1.10.9. Exact commands for each OS are on this page.

Is CVE-2025-5499 being exploited?

CVE-2025-5499 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-2025-5499 affect?

CVE-2025-5499 affects phpwcms. Severity is high (CVSS 7.3). A vulnerability classified as critical has been found in slackero phpwcms up to 1.9.45/1.10.8. Affected is the function is_file/getimagesize of the file image_resized.php. The manipulation of the argument imgfile leads to deserialization. I

How urgent is CVE-2025-5499?

Priority 49/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2025-5498 MEDIUM 5.5 UPGRADE A vulnerability was found in slackero phpwcms up to 1.9.45/1.10.8
CVE-2025-5497 MEDIUM 6.3 UPGRADE A vulnerability was detected in slackero phpwcms up to 1.9.45/1.10.8
CVE-2021-47783 MEDIUM 5.4 DOWNGRADE Phpwcms 1.9.30 contains a file upload vulnerability that allows authenticated attackers to upload malicious SV

References

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