CVE-2026-23483Network attack vector

Unauthenticated file read via plugin path traversal

Published Mar 23, 2026 · Updated Mar 23, 2026

Path traversal in Blinko 1.8.3 and earlier allows remote attackers to read arbitrary files through the unauthenticated plugin endpoint. The GET /plugins/* handler in server/routerExpress/file/plugin.ts splits attacker-controlled path segments, passes them to join(), and opens the result with createReadStream without confirming that it remains under .blinko/plugins. No credentials or user interaction are required, and the demonstrated consequence is server-side file disclosure without file modification or service interruption.

CVSS severity6.9
Medium
EPSS probability0.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Blinko 1.8.3 and earlier allows remote attackers to read arbitrary files through the unauthenticated plugin endpoint. The GET /plugins/* handler in server/routerExpress/file/plugin.ts splits attacker-controlled path segments, passes them to join(), and opens the result with createReadStream without confirming that it remains under .blinko/plugins. No credentials or user interaction are required, and the demonstrated consequence is server-side file disclosure without file modification or service interruption.

The record

CVE
CVE-2026-23483
Published
Mar 23, 2026
Updated
Mar 23, 2026
Vendor
Blinko Space
Product
Blinko
Classifications
CWE-22, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= 1.8.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Blinko Space · Blinkoversion=<= 1.8.3

Published CVSS scores

5.3NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
6.9GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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