CVE-2020-7782Public exploitNetwork attack vector

Command execution via unquoted scale option

Published Feb 8, 2021 · Updated Sep 16, 2024

Command injection in spritesheet-js allows attackers to execute shell commands through a crafted scale option passed to its main API. In lib/generator.js, trimImages concatenates options.scale without quoting or validation into an ImageMagick convert command passed to platform-command.exec. Exploitation requires control of the scale option with trimming enabled, and injected commands run with the privileges of the Node.js process.

CVSS severity9.8
Critical
EPSS probability2.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in spritesheet-js allows attackers to execute shell commands through a crafted scale option passed to its main API. In lib/generator.js, trimImages concatenates options.scale without quoting or validation into an ImageMagick convert command passed to platform-command.exec. Exploitation requires control of the scale option with trimming enabled, and injected commands run with the privileges of the Node.js process.

The record

CVE
CVE-2020-7782
Published
Feb 8, 2021
Updated
Sep 16, 2024
Vendor
Krzysztof Opałka
Product
spritesheet-js
Classifications
CWE-74, CWE-78, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 8, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record 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=0 <unspecified

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Krzysztof Opałka · spritesheet-jsversion=0 <unspecified

Published CVSS scores

9.8SnykCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

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 exploitPublished

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

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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