VulnSocial

CVE-2026-58500Patch(appium / appium-mcp)

LOWCVSS 8.2 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch appium appium-mcp systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

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.

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0.5/ 10 priority

Sources & remediation

Patch / fix
Exploit / PoC references
Weakness type (CWE)
CWE-79

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • appium-mcp

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • General: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-07-15); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
appium
Products
appium-mcp

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-07-15: 1Mentions · 2026-07-27: 1Patch / Workaround · 2026-07-15: 1Technical Details · 2026-07-15: 107-1507-27
Signal classification2 categories
Patch
150.0%
General
150.0%
Referenced assets1 URL
By indicator
Classification over time
DateTotalLabels
2026-07-151
Patch1
2026-07-271
General1
Full discourse2 posts
  • ケイ | IT・セキュリティ系副業Webライター@Teeeda_worker
    General

    CVE-2026-58500 MCP Appium 1.85.10以前の脆弱性をわかりやすく解説｜影響範囲と対策まとめ https://www.cybernote.click/2026/07/21/cve-2026-58500-mcp-appium-18510/ #IT #Security #cybersecurity

    Post summary

    The content is an informational article that outlines the scope and mitigation suggestions for CVE‑2026‑58500, but it lacks specific technical details, PoC references, active exploitation evidence, or patch information.

    0000050
    209 followersView on X
  • DFIR Lab@DFIR_Lab
    Patch

    🚨 HIGH: CVE-2026-58500 (CVSS 8.2) - MCP Appium XSS vulnerability allows arbitrary tool execution via HTML injection. Affects versions <1.85.10. Patch immediately. #CVE #Vulnerability #PatchNow #ThreatIntel #CyberSecurity https://t.co/eiAVKGjDKi

    Post summary

    High severity XSS vulnerability in MCP Appium disclosed with immediate patch advised.

    0000049
    75 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appappiumappium-mcp-node.js-

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