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CVE-2026-58500

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 U
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2facb07dbaad74559f23e68d09fae6959603421e28d07a22d6c2f505ccb756de
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"appium-mcp","vendor":"appium","versions":[{"status":"affected","version":"< 1.85.10"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9da8c298e81029e4203647156dcb69f32f87f6805edd901cad632dd32b110ca8 · sha256:ea69fa70ebbc0c77… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"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"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:9da8c298e81029e4203647156dcb69f32f87f6805edd901cad632dd32b110ca8 · sha256:ea69fa70ebbc0c77… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:9da8c298e81029e4203647156dcb69f32f87f6805edd901cad632dd32b110ca8 · sha256:ea69fa70ebbc0c77… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/appium/appium-mcp/commit/e222bbbd6fe2b656a320efcd143563f08061a83d","tags":["x_refsource_MISC"],"url":"https://github.com/appium/appium-mcp/commit/e222bbbd6fe2b656a320efcd143563f08061a83d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9da8c298e81029e4203647156dcb69f32f87f6805edd901cad632dd32b110ca8 · sha256:ea69fa70ebbc0c77… · /containers/cna/references/1
{"name":"https://github.com/appium/appium-mcp/security/advisories/GHSA-x975-rgx4-5fh4","tags":["x_refsource_CONFIRM"],"url":"https://github.com/appium/appium-mcp/security/advisories/GHSA-x975-rgx4-5fh4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9da8c298e81029e4203647156dcb69f32f87f6805edd901cad632dd32b110ca8 · sha256:ea69fa70ebbc0c77… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/appium/appium-mcp/security/advisories/GHSA-x975-rgx4-5fh4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9da8c298e81029e4203647156dcb69f32f87f6805edd901cad632dd32b110ca8 · sha256:ea69fa70ebbc0c77… · /containers/adp/0/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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