CVE-2026-26833CRITICAL 9.8EPSS p81.1%

CVE-2026-26833CVE-2026-26833

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS2.31% probability of exploitation · percentile 81.1% · 2026-06-19T12:03:05Z
Published2026-03-25
Last modified2026-03-30

Underlying weaknesses· 2

CWE-78CWE-94

References

  1. https://github.com/mmahrous/thumbler
  2. https://github.com/mmahrous/thumbler/blob/master/lib/thumbler.js
  3. https://github.com/zebbernCVE/CVE-2026-26833
  4. https://www.npmjs.com/package/thumbler

2

TypeTargetConfidenceTier
WeaknessImproper Neutralization of Special Elements used in an OS Command ('OS Command Injection')cwe-780%live
WeaknessImproper Control of Generation of Code ('Code Injection')cwe-940%live

Related by meaning· 6

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.