OS command injection in @offactory/compress-fonts via font file names
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.
Summary
@offactory/compress-fonts before 1.1.1 contains an OS command injection flaw (CWE-78). Font paths are interpolated unquoted into a FontForge command run with child_process.execSync, so shell metacharacters in file names execute commands. An attacker who supplies font files with crafted names can run commands with the privileges of the Node.js process when a user processes those files.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
@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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| adamarcanov | compress-fonts | before 1.1.1 | 1.1.1 | Patch available | CNA |
- compress-fonts Vendoradamarcanov Affected before 1.1.1 Fixed in 1.1.1 Patch available CNA
Remediation
Update @offactory/compress-fonts to version 1.1.1, the fixed version.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
- Fix · CNA compress-fonts (adamarcanov) Fixed in 1.1.1
Timeline
- 2026-10-14 Threatist record created from CVE-2026-110648
- 2026-10-14 Alias added: GHSA-3jqx-74fv-xh4j
- 2026-10-16 Priority changed: MEDIUM → LOW
- 2026-10-16 CISA SSVC decision points changed
- 2026-10-16 Priority changed: LOW → MEDIUM
References
Sources
- CVE-2026-110648 · CVE Program
- CVE-2026-110648 · NVD
- FIRST EPSS
- GHSA-3jqx-74fv-xh4j · GitHub Advisory Database · CC BY 4.0
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