CVE-2026-26833

thumbler through 1.1.2 allows OS command injection via the input, output, time, or size parameter in the thumbnail() function because user input is concatenated into a shell command string passed to child_process.exec() without proper sanitization or escaping.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/mmahrous/thumbler	Product
https://github.com/mmahrous/thumbler/blob/master/lib/thumbler.js	Not Applicable
https://github.com/zebbernCVE/CVE-2026-26833	Vendor Advisory Exploit
https://www.npmjs.com/package/thumbler	Product

Configurations

Configuration 1 (hide)

cpe:2.3:a:mmahrous:thumbler:*:*:*:*:*:node.js:*:*

History

30 Mar 2026, 13:28

Type	Values Removed	Values Added
CPE		cpe:2.3:a:mmahrous:thumbler::::::node.js::*
CWE		CWE-78
First Time		Mmahrous thumbler Mmahrous
References	~~() https://github.com/mmahrous/thumbler -~~	() https://github.com/mmahrous/thumbler - Product
References	~~() https://github.com/mmahrous/thumbler/blob/master/lib/thumbler.js -~~	() https://github.com/mmahrous/thumbler/blob/master/lib/thumbler.js - Not Applicable
References	~~() https://github.com/zebbernCVE/CVE-2026-26833 -~~	() https://github.com/zebbernCVE/CVE-2026-26833 - Vendor Advisory, Exploit
References	~~() https://www.npmjs.com/package/thumbler -~~	() https://www.npmjs.com/package/thumbler - Product

Information

Published : 2026-03-25 16:16

Updated : 2026-03-30 13:28

NVD link : CVE-2026-26833

Mitre link : CVE-2026-26833

CVE.ORG link : CVE-2026-26833

JSON object : View

Products Affected

mmahrous

thumbler

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CWE-94

Improper Control of Generation of Code ('Code Injection')

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