How severe is CVE-2021-38290?

CVE-2021-38290 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-38290 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-38290?

CVE-2021-38290 affects Thedaylightstudio Fuel Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-38290?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-38290 published?

CVE-2021-38290 was published on 2021-08-09 and last updated on 2026-06-17.

CVE-2021-38290

CVE-2021-38290 is a high-severity vulnerability in Thedaylightstudio Fuel Cms with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-74.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 6.8
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Thedaylightstudio Fuel Cms
Published: 2021-08-09
Last modified: 2026-06-17

Description

A host header attack vulnerability exists in FUEL CMS 1.5.0 through fuel/modules/fuel/config/fuel_constants.php and fuel/modules/fuel/libraries/Asset.php. An attacker can use a man in the middle attack such as phishing.

Frequently asked questions

What is CVE-2021-38290?: A host header attack vulnerability exists in FUEL CMS 1.5.0 through fuel/modules/fuel/config/fuel_constants.php and fuel/modules/fuel/libraries/Asset.php. An attacker can use a man in the middle attack such as phishing.
How severe is CVE-2021-38290?: CVE-2021-38290 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-38290 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-38290?: CVE-2021-38290 affects Thedaylightstudio Fuel Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-38290?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-38290 published?: CVE-2021-38290 was published on 2021-08-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:thedaylightstudio:fuel_cms:*:*:*:*:*:*:*:*

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