What’s Vulnerable › Vulnerabilities

CVE-2026-110648: @offactory/compress-fonts before 1.1.1 OS Command Injection via Font File Names

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-14 · updated 2026-10-16
• Weakness: CWE-78

Description

@offactory/compress-fonts before 1.1.1 contains an OS command injection vulnerability that allows attackers to execute shell commands by supplying font files with crafted names. Font paths are interpolated unquoted into a FontForge command run through child_process.execSync, so shell metacharacters in file names execute commands with the Node.js process privileges.

Affected products

• adamarcanov compress-fonts: before 1.1.1 — fixed in 1.1.1

How to fix

Upgrade to a fixed version: adamarcanov compress-fonts 1.1.1. Check the vendor advisory for mitigations.

References

• https://github.com/adamarcanov/compress-fonts/blob/7b07d20b3125a7bba8f933eeca21f5a09c8fb62a/index.js#L48
• https://github.com/adamarcanov/compress-fonts/commit/12002e5866af2163cd34424baae5a53338951a5d
• https://github.com/adamarcanov/compress-fonts/pull/1
• https://www.vulncheck.com/advisories/offactory-compress-fonts-before-1.1.1-os-command-injection-via-font-file-names

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