How severe is CVE-2021-20736?

CVE-2021-20736 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-2021-20736 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-2021-20736?

CVE-2021-20736 affects Weseek Growi. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-20736?

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-2021-20736 published?

CVE-2021-20736 was published on 2021-06-22 and last updated on 2026-06-17.

CVE-2021-20736

CVE-2021-20736 is a critical-severity vulnerability in Weseek Growi 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-74.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 6.4
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Weseek Growi
Published: 2021-06-22
Last modified: 2026-06-17

Description

NoSQL injection vulnerability in GROWI versions prior to v4.2.20 allows a remote attacker to obtain and/or alter the information stored in the database via unspecified vectors.

Frequently asked questions

What is CVE-2021-20736?: NoSQL injection vulnerability in GROWI versions prior to v4.2.20 allows a remote attacker to obtain and/or alter the information stored in the database via unspecified vectors.
How severe is CVE-2021-20736?: CVE-2021-20736 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-2021-20736 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-2021-20736?: CVE-2021-20736 affects Weseek Growi. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-20736?: 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-2021-20736 published?: CVE-2021-20736 was published on 2021-06-22 and last updated on 2026-06-17.

References

Affected products (1)

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

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