How severe is CVE-2021-30108?

CVE-2021-30108 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2021-30108 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-30108?

CVE-2021-30108 affects Feehi Feehi Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-30108?

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

When was CVE-2021-30108 published?

CVE-2021-30108 was published on 2021-05-24 and last updated on 2026-06-17.

CVE-2021-30108

CVE-2021-30108 is a critical-severity vulnerability in Feehi Feehi Cms with a CVSS 3.x base score of 9.1. 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-918.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 6.4
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Feehi Feehi Cms
Published: 2021-05-24
Last modified: 2026-06-17

Description

Feehi CMS 2.1.1 is affected by a Server-side request forgery (SSRF) vulnerability. When the user modifies the HTTP Referer header to any url, the server can make a request to it.

Frequently asked questions

What is CVE-2021-30108?: Feehi CMS 2.1.1 is affected by a Server-side request forgery (SSRF) vulnerability. When the user modifies the HTTP Referer header to any url, the server can make a request to it.
How severe is CVE-2021-30108?: CVE-2021-30108 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2021-30108 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-30108?: CVE-2021-30108 affects Feehi Feehi Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-30108?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-30108 published?: CVE-2021-30108 was published on 2021-05-24 and last updated on 2026-06-17.

References

https://github.com/liufee/cms/issues/57

Affected products (1)

cpe:2.3:a:feehi:feehi_cms:2.1.1:*:*:*:*:*:*:*

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