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CVE-2021-3223

43
FAUCET Score

CVE-2021-3223 is a high-severity directory traversal vulnerability affecting Node-RED-Dashboard versions prior to 2.26.2. This flaw allows an unauthenticated attacker to read arbitrary files on the server by manipulating the ui_base/js/ path. With a CVSS score of 7.5, it presents a significant risk due to its network-based attack vector and low complexity, leading to high confidentiality impact. While not listed on CISA's KEV catalog or actively exploited, public Nuclei templates exist, indicating readily available exploit code. Despite its high EPSS score and FAUCET Risk Score of 99/100, there is minimal community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.26.2CPE matchmatch criteria
cpe:2.3:a:nodered:node-red-dashboard:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
18.51%
Probability of exploitation in next 30 days
EPSS Percentile
96.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2021-3223 · Jun 24, 2021
This CVE's current EPSS score of 0.1851 is in the 95th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

npmpatch availablevia ghsa
Product: node-red-dashboardFixed in: 2.26.2

Vendor Advisories (1)

npmGHSA-2hw7-mxvj-m455high

Path traversal in Node-RED-Dashboard

Jan 29, 2021

References

github.com / node-red/node-red-dashboard/issues/669
Third Party Advisory
github.com / node-red/node-red-dashboard/releases/tag/2.26.2
Release NotesThird Party Advisory