Search
Find a vulnerability
Search criteria
2 vulnerabilities by jtescher
CVE-2026-107704 (GCVE-0-2026-107704)
Vulnerability from nvd – Published: 2026-10-08 18:36 – Updated: 2026-10-09 14:05
VLAI
EPSS
VEX
Title
image_optimizer 1.3.0 through 1.9.0 OS Command Injection via identify_format
Summary
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.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-09 14:05 UTC
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://gist.github.com/R3tro16/a99a058d24a066927… | third-party-advisory |
| https://github.com/jtescher/image_optimizer/blob/… | technical-description |
| https://github.com/jtescher/image_optimizer/blob/… | technical-description |
| https://github.com/jtescher/image_optimizer | product |
| https://www.vulncheck.com/advisories/image-optimi… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jtescher | image_optimizer |
Affected:
1.3.0 , ≤ 1.9.0
(semver)
|
Date Public
2026-06-15 00:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-107704",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-09T14:05:20.395722Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-09T14:05:27.930Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://gist.github.com/R3tro16/a99a058d24a06692721a6a3fade9649d"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://rubygems.org/gems/image_optimizer",
"defaultStatus": "unaffected",
"packageURL": "pkg:gem/image_optimizer",
"product": "image_optimizer",
"repo": "https://github.com/jtescher/image_optimizer",
"vendor": "jtescher",
"versions": [
{
"lessThanOrEqual": "1.9.0",
"status": "affected",
"version": "1.3.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "William Pierson (Retro16)"
}
],
"datePublic": "2026-06-15T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "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 \u0027;\u0027 that are executed via Ruby backticks with the Ruby process privileges."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"vectorString": "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",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH"
},
"format": "CVSS"
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-78",
"description": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-08T18:36:37.394Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"tags": [
"third-party-advisory"
],
"url": "https://gist.github.com/R3tro16/a99a058d24a06692721a6a3fade9649d"
},
{
"tags": [
"technical-description"
],
"url": "https://github.com/jtescher/image_optimizer/blob/v1.9.0/lib/image_optimizer.rb#L37-L47"
},
{
"tags": [
"technical-description"
],
"url": "https://github.com/jtescher/image_optimizer/blob/v1.9.0/lib/image_optimizer/shell.rb#L30-L32"
},
{
"tags": [
"product"
],
"url": "https://github.com/jtescher/image_optimizer"
},
{
"name": "VulnCheck Advisory: image_optimizer 1.3.0 through 1.9.0 OS Command Injection via identify_format",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/image-optimizer-1.3.0-through-1.9.0-os-command-injection-via-identify-format"
}
],
"title": "image_optimizer 1.3.0 through 1.9.0 OS Command Injection via identify_format",
"x_generator": {
"engine": "vulncheck-endgame"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-107704",
"datePublished": "2026-10-08T18:36:37.394Z",
"dateReserved": "2026-10-08T16:52:24.549Z",
"dateUpdated": "2026-10-09T14:05:27.930Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-107704 (GCVE-0-2026-107704)
Vulnerability from cvelistv5 – Published: 2026-10-08 18:36 – Updated: 2026-10-09 14:05
VLAI
EPSS
VEX
Title
image_optimizer 1.3.0 through 1.9.0 OS Command Injection via identify_format
Summary
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.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-09 14:05 UTC
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://gist.github.com/R3tro16/a99a058d24a066927… | third-party-advisory |
| https://github.com/jtescher/image_optimizer/blob/… | technical-description |
| https://github.com/jtescher/image_optimizer/blob/… | technical-description |
| https://github.com/jtescher/image_optimizer | product |
| https://www.vulncheck.com/advisories/image-optimi… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jtescher | image_optimizer |
Affected:
1.3.0 , ≤ 1.9.0
(semver)
|
Date Public
2026-06-15 00:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-107704",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-09T14:05:20.395722Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-09T14:05:27.930Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://gist.github.com/R3tro16/a99a058d24a06692721a6a3fade9649d"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://rubygems.org/gems/image_optimizer",
"defaultStatus": "unaffected",
"packageURL": "pkg:gem/image_optimizer",
"product": "image_optimizer",
"repo": "https://github.com/jtescher/image_optimizer",
"vendor": "jtescher",
"versions": [
{
"lessThanOrEqual": "1.9.0",
"status": "affected",
"version": "1.3.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "William Pierson (Retro16)"
}
],
"datePublic": "2026-06-15T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "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 \u0027;\u0027 that are executed via Ruby backticks with the Ruby process privileges."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"vectorString": "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",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH"
},
"format": "CVSS"
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-78",
"description": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-08T18:36:37.394Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"tags": [
"third-party-advisory"
],
"url": "https://gist.github.com/R3tro16/a99a058d24a06692721a6a3fade9649d"
},
{
"tags": [
"technical-description"
],
"url": "https://github.com/jtescher/image_optimizer/blob/v1.9.0/lib/image_optimizer.rb#L37-L47"
},
{
"tags": [
"technical-description"
],
"url": "https://github.com/jtescher/image_optimizer/blob/v1.9.0/lib/image_optimizer/shell.rb#L30-L32"
},
{
"tags": [
"product"
],
"url": "https://github.com/jtescher/image_optimizer"
},
{
"name": "VulnCheck Advisory: image_optimizer 1.3.0 through 1.9.0 OS Command Injection via identify_format",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/image-optimizer-1.3.0-through-1.9.0-os-command-injection-via-identify-format"
}
],
"title": "image_optimizer 1.3.0 through 1.9.0 OS Command Injection via identify_format",
"x_generator": {
"engine": "vulncheck-endgame"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-107704",
"datePublished": "2026-10-08T18:36:37.394Z",
"dateReserved": "2026-10-08T16:52:24.549Z",
"dateUpdated": "2026-10-09T14:05:27.930Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}