CVE-2026-107704 image_optimizer Ruby gem - Command Injection

image_optimizer Ruby gem 1.3.0 through 1.9.0 contains a command injection caused by improper sanitization of image path in ImageOptimizer#identify_format, letting attackers execute OS commands with Ruby process privileges, exploit requires crafted image path with shell metacharacters.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
1.66% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Command Injection
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
8 October 2026
Updated
15 October 2026
Weakness
CWE-78

Vendor fix

Update to a version later than 1.9.0 or the latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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