What’s Vulnerable › Vulnerabilities

CVE-2020-37279: easy-pdf-merge 0.1.0 through 0.2.6 OS Command Injection via merge function

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-12 · updated 2026-10-16
• Weakness: CWE-78

Description

easy-pdf-merge 0.1.0 through 0.2.6 contains an OS command injection vulnerability that allows attackers to execute commands by injecting shell metacharacters into source paths, destination path, or maxHeap option. Attackers can supply file names or options containing double quotes, semicolons, $() or backticks, which child_process.exec() runs through a shell with the Node.js process privileges.

Affected products

• karuppiah7890 easy-pdf-merge: from 0.1.0 through 0.2.6

References

• https://github.com/karuppiah7890/easy-pdf-merge
• https://github.com/karuppiah7890/easy-pdf-merge/blob/v0.2.6/source/lib/PDFMerger.js#L71-L75
• https://github.com/karuppiah7890/easy-pdf-merge/pull/28
• https://github.com/karuppiah7890/easy-pdf-merge/pull/45
• https://www.vulncheck.com/advisories/easy-pdf-merge-0.1.0-through-0.2.6-os-command-injection-via-merge-function
• https://github.com/karuppiah7890/easy-pdf-merge/pull/28

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