How severe is CVE-2021-20672?

CVE-2021-20672 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-2021-20672 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-20672?

CVE-2021-20672 affects Weseek Growi. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-20672?

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

When was CVE-2021-20672 published?

CVE-2021-20672 was published on 2021-03-10 and last updated on 2026-06-17.

CVE-2021-20672

CVE-2021-20672 is a medium-severity vulnerability in Weseek Growi 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% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Weseek Growi
Published: 2021-03-10
Last modified: 2026-06-17

Description

Reflected cross-site scripting vulnerability due to insufficient verification of URL query parameters in GROWI (v4.2 Series) versions from v4.2.0 to v4.2.7 allows remote attackers to inject an arbitrary script via unspecified vectors.

Frequently asked questions

What is CVE-2021-20672?: Reflected cross-site scripting vulnerability due to insufficient verification of URL query parameters in GROWI (v4.2 Series) versions from v4.2.0 to v4.2.7 allows remote attackers to inject an arbitrary script via unspecified vectors.
How severe is CVE-2021-20672?: CVE-2021-20672 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-2021-20672 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-20672?: CVE-2021-20672 affects Weseek Growi. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-20672?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-20672 published?: CVE-2021-20672 was published on 2021-03-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:weseek:growi:*:*:*:*:*:*:*:*

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