RCE in Adamarcanov Compress-Fonts
CVE-2026-110648
@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.
Vulnerability class: Command Injection (OS Command Injection)
Published .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/adamarcanov/compress-fonts/pull/1 (issue-tracking, patch)
- github.com/adamarcanov/compress-fonts/commit/12002e5866af2163cd34424baae5a53338… (patch)
- github.com/adamarcanov/compress-fonts/blob/7b07d20b3125a7bba8f933eeca21f5a09c8f… (technical-description)
- www.vulncheck.com/advisories/offactory-compress-fonts-before-1.1.1-os-command-i… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-110648?
- CVE-2026-110648 is a high-severity vulnerability in Adamarcanov Compress-Fonts, classified under OS Command Injection. CVSS score: 7.8/10. Published 2026-10-14.
- How severe is CVE-2026-110648?
- High severity. CVSS v3 base score is 7.8 out of 10.