How severe is CVE-2021-23797?

CVE-2021-23797 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-23797 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-23797?

CVE-2021-23797 affects Http-server-node Project Http-server-node. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-23797?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-23797 published?

CVE-2021-23797 was published on 2021-12-17 and last updated on 2026-06-17.

CVE-2021-23797

CVE-2021-23797 is a high-severity vulnerability in Http-server-node Project Http-server-node with a CVSS 3.x base score of 7.5. 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-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.5
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Http-server-node Project Http-server-node
Published: 2021-12-17
Last modified: 2026-06-17

Description

All versions of package http-server-node are vulnerable to Directory Traversal via use of --path-as-is.

Frequently asked questions

What is CVE-2021-23797?: All versions of package http-server-node are vulnerable to Directory Traversal via use of --path-as-is.
How severe is CVE-2021-23797?: CVE-2021-23797 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-23797 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-23797?: CVE-2021-23797 affects Http-server-node Project Http-server-node. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-23797?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-23797 published?: CVE-2021-23797 was published on 2021-12-17 and last updated on 2026-06-17.

References

https://snyk.io/vuln/SNYK-JS-HTTPSERVERNODE-1727656

Affected products (1)

cpe:2.3:a:http-server-node_project:http-server-node:*:*:*:*:*:node.js:*:*

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