How severe is CVE-2020-21180?

CVE-2020-21180 has a CVSS 3.x base score of 9.8, 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 high.

Is CVE-2020-21180 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-21180?

CVE-2020-21180 affects Koa2-blog Project Koa2-blog. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-21180?

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-2020-21180 published?

CVE-2020-21180 was published on 2021-02-01 and last updated on 2026-06-17.

CVE-2020-21180

CVE-2020-21180 is a critical-severity vulnerability in Koa2-blog Project Koa2-blog with a CVSS 3.x base score of 9.8. 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-89.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Koa2-blog Project Koa2-blog
Published: 2021-02-01
Last modified: 2026-06-17

Description

Sql injection vulnerability in koa2-blog 1.0.0 allows remote attackers to Injecting a malicious SQL statement via the name parameter to the signup page.

Frequently asked questions

What is CVE-2020-21180?: Sql injection vulnerability in koa2-blog 1.0.0 allows remote attackers to Injecting a malicious SQL statement via the name parameter to the signup page.
How severe is CVE-2020-21180?: CVE-2020-21180 has a CVSS 3.x base score of 9.8, 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 high.
Is CVE-2020-21180 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-21180?: CVE-2020-21180 affects Koa2-blog Project Koa2-blog. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-21180?: 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-2020-21180 published?: CVE-2020-21180 was published on 2021-02-01 and last updated on 2026-06-17.

References

https://github.com/wclimb/Koa2-blog/issues/41

Affected products (1)

cpe:2.3:a:koa2-blog_project:koa2-blog:1.0.0:*:*:*:*:*:*:*

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