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Vulnerability record · CVE-2026-26833 · published 25 March 2026

CVE-2026-26833: Mmahrous thumbler os command injection vulnerability

MMmahrous · Thumbler

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.

9.8 CVSS 3.1 Critical EPSS 3.3% · top 11.9% CWE-78 · OS command injectionCWE-94 · Code injection
9.8CVSS 3.1 base score
3.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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 ExploitVendor Advisory
https://www.npmjs.com/package/thumbler Product

Track CVE-2026-26833 inside VULONE

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Source: NIST National Vulnerability Database (record CVE-2026-26833), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.