How severe is CVE-2021-23443?

CVE-2021-23443 has a CVSS 3.x base score of 5.4, 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-2021-23443 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-23443?

CVE-2021-23443 affects Adonisjs Edge. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-23443?

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

When was CVE-2021-23443 published?

CVE-2021-23443 was published on 2021-09-21 and last updated on 2026-06-17.

CVE-2021-23443

CVE-2021-23443 is a medium-severity vulnerability in Adonisjs Edge with a CVSS 3.x base score of 5.4. 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-843.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 5.8
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-843
Affected product: Adonisjs Edge
Published: 2021-09-21
Last modified: 2026-06-17

Description

This affects the package edge.js before 5.3.2. A type confusion vulnerability can be used to bypass input sanitization when the input to be rendered is an array (instead of a string or a SafeValue), even if {{ }} are used.

Frequently asked questions

What is CVE-2021-23443?: This affects the package edge.js before 5.3.2. A type confusion vulnerability can be used to bypass input sanitization when the input to be rendered is an array (instead of a string or a SafeValue), even if {{ }} are used.
How severe is CVE-2021-23443?: CVE-2021-23443 has a CVSS 3.x base score of 5.4, 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-2021-23443 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-23443?: CVE-2021-23443 affects Adonisjs Edge. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-23443?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-23443 published?: CVE-2021-23443 was published on 2021-09-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:adonisjs:edge:*:*:*:*:*:node.js:*:*

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