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Public proof of concept

CVE-2021-23797

A public proof of concept exists; no exploitation attested.

  • Published2021-12-17
  • WeaknessCWE-22

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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

Timeline

dates in UTC
  1. 2021-12-1720:15CVE publishedNVD

Versions per branch

OSV · NVD
http-server-node
BranchAffectedFixed in
1.0≤ 1.0.2no fix published
Http-server-node project http-server-node
BranchAffectedFixed in
—all versionsno fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • node-http-serverUbuntu:26.10all versions · no fixed version listed
  • node-http-serverUbuntu:26.04:LTSall versions · no fixed version listed
  • node-http-serverUbuntu:25.10all versions · no fixed version listed
  • node-http-serverUbuntu:24.04:LTSall versions · no fixed version listed

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

read 2026-11-01 01:02 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 3.17.5known since 2026-10-23
  • NVDCVSS 3.19.8read 2026-10-23
  • NVDCVSS 2.07.5read 2026-10-23
  • NVDweakness (CWE)CWE-22read 2026-10-23
  • FIRST EPSSEPSS score1.8 %2026-11-08
  • PoC-in-GitHubproof of concept1known since 2026-11-01
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryHIGH2022-01-04

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2021-12-17
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-hj3m-v758-jwx5

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.

Is CVE-2021-23797 actively exploited?

Active exploitation of CVE-2021-23797 has not been confirmed. Its EPSS score was 1.8% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-23797?

CVE-2021-23797 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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