CVE-2026-30457: An issue in the /parser/dwoo component of Daylight Studio FuelCMS v1.5.2 allows attackers to execute arbitrary

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CRITICAL 9.8REMOTEDOWNGRADEDOWNGRADE

CVE-2026-30457 is a critical-severity flaw (CVSS 9.8) affecting dwoo, fuel cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue in the /parser/dwoo component of Daylight Studio FuelCMS v1.5.2 allows attackers to execute arbitrary code via crafted PHP code.

Why this priority

Critical severity
Public exploit reference
CISA SSVC: automatable with total technical impact
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	0.7% (top 49%)
CISA exploited list	No
Weakness	CWE-94
Published	2026-03-26
Last modified	2026-07-05

Publisher (CNA): MITRE · Vendor: thedaylightstudio

Last updated 2026-07-05 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-26 19:16 UTCPublished CVE record published
2026-07-05 17:17 UTCUpdated Record last modified

thedaylightstudio dwoo DOWNGRADE

Affected: 1.1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.1.0 (Debian / Ubuntu)

apt-cache madison dwoo sudo apt install dwoo=<VERSION_BEFORE_1.1.0> sudo apt-mark hold dwoo

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

dnf --showduplicates list dwoo sudo dnf downgrade dwoo-<VERSION_BEFORE_1.1.0> sudo dnf versionlock add dwoo

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.

thedaylightstudio fuel cms DOWNGRADE

Affected: 1.5.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.5.2

1. Check installed version

apt-cache policy fuel-cms || rpm -q fuel-cms || fuel-cms --version

2. No fixed release: DOWNGRADE to a release before 1.5.2 (Debian / Ubuntu)

apt-cache madison fuel-cms sudo apt install fuel-cms=<VERSION_BEFORE_1.5.2> sudo apt-mark hold fuel-cms

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

dnf --showduplicates list fuel-cms sudo dnf downgrade fuel-cms-<VERSION_BEFORE_1.5.2> sudo dnf versionlock add fuel-cms

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.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora ELN · perl-Encode · FIXED · 3.25-528.eln159 · FEDORA-2026-79991d0238 · source

sudo dnf upgrade --advisory=FEDORA-2026-79991d0238

Fedora 46 · fonttools · FIXED · 4.68.0-1.fc46 · FEDORA-2026-65d6c01c75 · source

sudo dnf upgrade --advisory=FEDORA-2026-65d6c01c75

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-2026-30457?

dwoo: downgrade or apply the listed mitigation; fuel cms: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-30457 being exploited?

CVE-2026-30457 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-2026-30457 affect?

CVE-2026-30457 affects dwoo, fuel cms. Severity is critical (CVSS 9.8). An issue in the /parser/dwoo component of Daylight Studio FuelCMS v1.5.2 allows attackers to execute arbitrary code via crafted PHP code.

How urgent is CVE-2026-30457?

Priority 60/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

References

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