CVE-2026-58191

Appium: Reflected XSS / arbitrary JS in @appium/base-driver /test/guinea-pig* routes

MEDIUM
6.1
CVSS Score
Published: July 8, 2026 at 08:57 PM UTC
Updated: July 15, 2026 at 08:50 PM UTC
2 products affected across 1 vendorAppium /base DriverAppium

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

Appium is a cross-platform automation framework for all kinds of apps, built on top of the W3C WebDriver protocol. Prior to 10.7.0, Appium's base-driver unconditionally mounts the /test/guinea-pig, /test/guinea-pig-scrollable, and /test/guinea-pig-app-banner routes, and compileLodashTemplate reflects the throwError query parameter, comments POST field, and User-Agent request header into HTML without escaping, allowing reflected cross-site scripting and arbitrary JavaScript execution on the server origin. This issue is fixed in version 10.7.0.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 10.7.0
Affected range stops below 10.7.0, so it looks safe — our inference, not a vendor statement
v < 10.7.0
Affected range stops below 10.7.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

x_refsource_CONFIRMExploitVendor Advisory
Source: cverecord
https://github.com/appium/appium/security/advisories/GHSA-3wgp-x9p5-c7cc

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-79CWE-489

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