How severe is CVE-2021-30227?

CVE-2021-30227 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-30227 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-30227?

CVE-2021-30227 affects Emlog. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-30227?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-30227 published?

CVE-2021-30227 was published on 2021-04-29 and last updated on 2026-06-17.

CVE-2021-30227

CVE-2021-30227 is a medium-severity vulnerability in Emlog with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Emlog
Published: 2021-04-29
Last modified: 2026-06-17

Description

Cross Site Scripting (XSS) vulnerability in the article comments feature in emlog 6.0.

Frequently asked questions

What is CVE-2021-30227?: Cross Site Scripting (XSS) vulnerability in the article comments feature in emlog 6.0.
How severe is CVE-2021-30227?: CVE-2021-30227 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-30227 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-30227?: CVE-2021-30227 affects Emlog. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-30227?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-30227 published?: CVE-2021-30227 was published on 2021-04-29 and last updated on 2026-06-17.

References

https://github.com/emlog/emlog/issues/79

Affected products (1)

cpe:2.3:a:emlog:emlog:6.0.0:-:*:*:*:*:*:*

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