CVE-2026-107704
CRITICAL
CVSS 9.8
Published: 2026-10-08
Modified: 2026-10-09
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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.
Quick Facts
| CVE ID | CVE-2026-107704 |
| CVSS Score | 9.8 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Published | 2026-10-08 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |
References
- https://gist.github.com/R3tro16/a99a058d24a06692721a6a3fade9…
- https://github.com/jtescher/image_optimizer
- https://github.com/jtescher/image_optimizer/blob/v1.9.0/lib/…
- https://github.com/jtescher/image_optimizer/blob/v1.9.0/lib/…
- https://www.vulncheck.com/advisories/image-optimizer-1.3.0-t…
- https://gist.github.com/R3tro16/a99a058d24a06692721a6a3fade9…