CVE-2026-107704

critical

Description

The image_optimizer Ruby gem 1.3.0 through 1.9.0 contains an OS command injection vulnerability in ImageOptimizer#identify_format that allows attackers to execute commands by supplying a crafted image path when the identify option is enabled. Attackers controlling the path, such as an uploaded file name, can append shell metacharacters like ';' that are executed via Ruby backticks with the Ruby process privileges.

References

https://www.vulncheck.com/advisories/image-optimizer-1.3.0-through-1.9.0-os-command-injection-via-identify-format

https://github.com/jtescher/image_optimizer/blob/v1.9.0/lib/image_optimizer/shell.rb#L30-L32

https://github.com/jtescher/image_optimizer/blob/v1.9.0/lib/image_optimizer.rb#L37-L47

https://github.com/jtescher/image_optimizer

https://gist.github.com/R3tro16/a99a058d24a06692721a6a3fade9649d

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-95149

Details

Source: Mitre, NVD

Published: 2026-10-08

Updated: 2026-10-09

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

CVSS v4

Base Score: 9.3

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Severity: Critical

EPSS

EPSS: 0.01663