CVE-2026-43910

Appium java-client Allows Network Pivot via Unvalidated directConnect Redirect in AppiumCommandExecutor

HIGH
8.2
CVSS Score
Published: July 28, 2026 at 03:38 PM UTC
Updated: October 24, 2026 at 01:10 PM UTC
1 product affected across 1 vendorJava Client

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Severity
HIGH8.2
Exploit prediction
EPSS 0.4%
SSVC
PoC

Description

Appium Java Client is the Java language binding for writing Appium tests that conform to the W3C WebDriver protocol. From 8.2.1 until 10.1.1, when directConnect(true) is enabled, AppiumCommandExecutor.setDirectConnect() reads the directConnectHost, directConnectPort, and directConnectPath fields from the server's NEW_SESSION response and rebuilds the client's server URL from them, validating only that the protocol is https, with no host allowlist or IP validation; a rogue or compromised server can therefore redirect all subsequent session traffic to an arbitrary destination, enabling full interception of session traffic and a server-side request forgery pivot to internal hosts, including cloud metadata (IMDS) credential theft. This vulnerability is fixed in 10.1.1.

Affected

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

8.2.1 ≤ v < 10.1.1
Affected range stops below 10.1.1, so it looks safe — our inference, not a vendor statement

References (4)

x_refsource_CONFIRMExploitVendor Advisory
Source: cverecord
https://github.com/appium/java-client/security/advisories/GHSA-28f5-38xr-jh2w
x_refsource_MISCIssue TrackingPatch
Source: cverecord
https://github.com/appium/java-client/pull/2408
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/appium/java-client/releases/tag/v10.1.1

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

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

CVSS

8.2HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-441CWE-918

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