by Kastro
Paper/Archive/CVE-2026-107704

CVE-2026-107704

jtescher image_optimizer — image_optimizer 1.3.0 through 1.9.0 OS Command Injection via identify_format

EPSS 2%public exploitCVSS 9.8
critical.is priorityof 100
56
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 81.1.811 × 2016.2Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
image_optimizer1.3.0 – 1.9.0–CNA

Scores by source

VulnCheck (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitgist.github.com/R3tro16/a99a058d24a06692721a6a3fade9649dwriteupgithub.com/jtescher/image_optimizer/blob/v1.9.0/lib/image_optimizer.rb#L37-L47writeupgithub.com/jtescher/image_optimizer/blob/v1.9.0/lib/image_optimizer/shell.rb#L30-L32refgithub.com/jtescher/image_optimizerwriteupvulncheck.com/advisories/image-optimizer-1.3.0-through-1.9.0-os-command-injection-via-identify-format