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2 vulnerabilities found for appium-mcp by appium
CVE-2026-58500 (GCVE-0-2026-58500)
Vulnerability from nvd – Published: 2026-07-13 21:17 – Updated: 2026-07-14 14:31
VLAI
EPSS
VEX
Title
MCP Appium: Unescaped Locator Data XSS in MCP-UI Resource (createLocatorGeneratorUI)
Summary
MCP Appium is an MCP server that provides AI assistants with tools to automate mobile app testing on Android and iOS. In versions prior to 1.85.10, the createLocatorGeneratorUI function interpolates attacker-controlled element attributes — text, content-desc, resource-id, and locator selector values — directly into an HTML template literal without any HTML or JavaScript context escaping. An attacker who controls the UI of the app under test can inject arbitrary HTML and JavaScript into the MCP UI resource returned by the generate_locators tool. When a victim's MCP client renders this resource, the injected script executes and can invoke arbitrary MCP tools via window.parent.postMessage, leading to unauthorized MCP tool execution such as taking screenshots, reading page source, or any other registered capability. This issue has been fixed in version 1.85.10.
Severity
8.2 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/appium/appium-mcp/security/adv… | x_refsource_CONFIRM |
| https://github.com/appium/appium-mcp/commit/e222b… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| appium | appium-mcp |
Affected:
< 1.85.10
|
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"timestamp": "2026-07-14T14:24:41.518699Z",
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"url": "https://github.com/appium/appium-mcp/security/advisories/GHSA-x975-rgx4-5fh4"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "appium-mcp",
"vendor": "appium",
"versions": [
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"status": "affected",
"version": "\u003c 1.85.10"
}
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],
"descriptions": [
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}
],
"metrics": [
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"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N",
"version": "3.1"
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"problemTypes": [
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],
"providerMetadata": {
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"shortName": "GitHub_M"
},
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{
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],
"source": {
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"discovery": "UNKNOWN"
},
"title": "MCP Appium: Unescaped Locator Data XSS in MCP-UI Resource (createLocatorGeneratorUI)"
}
},
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"datePublished": "2026-07-13T21:17:29.497Z",
"dateReserved": "2026-06-30T20:21:25.813Z",
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CVE-2026-58500 (GCVE-0-2026-58500)
Vulnerability from cvelistv5 – Published: 2026-07-13 21:17 – Updated: 2026-07-14 14:31
VLAI
EPSS
VEX
Title
MCP Appium: Unescaped Locator Data XSS in MCP-UI Resource (createLocatorGeneratorUI)
Summary
MCP Appium is an MCP server that provides AI assistants with tools to automate mobile app testing on Android and iOS. In versions prior to 1.85.10, the createLocatorGeneratorUI function interpolates attacker-controlled element attributes — text, content-desc, resource-id, and locator selector values — directly into an HTML template literal without any HTML or JavaScript context escaping. An attacker who controls the UI of the app under test can inject arbitrary HTML and JavaScript into the MCP UI resource returned by the generate_locators tool. When a victim's MCP client renders this resource, the injected script executes and can invoke arbitrary MCP tools via window.parent.postMessage, leading to unauthorized MCP tool execution such as taking screenshots, reading page source, or any other registered capability. This issue has been fixed in version 1.85.10.
Severity
8.2 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/appium/appium-mcp/security/adv… | x_refsource_CONFIRM |
| https://github.com/appium/appium-mcp/commit/e222b… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| appium | appium-mcp |
Affected:
< 1.85.10
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-58500",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-14T14:24:41.518699Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-07-14T14:31:14.587Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/appium/appium-mcp/security/advisories/GHSA-x975-rgx4-5fh4"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "appium-mcp",
"vendor": "appium",
"versions": [
{
"status": "affected",
"version": "\u003c 1.85.10"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "MCP Appium is an MCP server that provides AI assistants with tools to automate mobile app testing on Android and iOS. In versions prior to 1.85.10, the createLocatorGeneratorUI function interpolates attacker-controlled element attributes \u2014 text, content-desc, resource-id, and locator selector values \u2014 directly into an HTML template literal without any HTML or JavaScript context escaping. An attacker who controls the UI of the app under test can inject arbitrary HTML and JavaScript into the MCP UI resource returned by the generate_locators tool. When a victim\u0027s MCP client renders this resource, the injected script executes and can invoke arbitrary MCP tools via window.parent.postMessage, leading to unauthorized MCP tool execution such as taking screenshots, reading page source, or any other registered capability. This issue has been fixed in version 1.85.10."
}
],
"metrics": [
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"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N",
"version": "3.1"
}
}
],
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"description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
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"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-13T21:17:29.497Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
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"name": "https://github.com/appium/appium-mcp/security/advisories/GHSA-x975-rgx4-5fh4",
"tags": [
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],
"url": "https://github.com/appium/appium-mcp/security/advisories/GHSA-x975-rgx4-5fh4"
},
{
"name": "https://github.com/appium/appium-mcp/commit/e222bbbd6fe2b656a320efcd143563f08061a83d",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/appium/appium-mcp/commit/e222bbbd6fe2b656a320efcd143563f08061a83d"
}
],
"source": {
"advisory": "GHSA-x975-rgx4-5fh4",
"discovery": "UNKNOWN"
},
"title": "MCP Appium: Unescaped Locator Data XSS in MCP-UI Resource (createLocatorGeneratorUI)"
}
},
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