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CVE-2026-25244 – WebdriverIO has Command Injection in the BrowserStack Service

Posted on May 19, 2026
CVE ID :CVE-2026-25244

Published : May 18, 2026, 9:16 p.m. | 3 hours, 5 minutes ago

Description :WebdriverIO is a test automation framework for unit, e2e and component testing using WebDriver, WebDriver BiDi and Appium. Versions below 9.24.0 contain a command injection vulnerability leading to remote code execution (RCE) in test orchestration. Git permits branch names containing shell metacharacters, and getGitMetadataForAISelection() interpolates these names directly into execSync() calls without sanitization. An attacker can exploit this by supplying a malicious repository (via testOrchestrationOptions.runSmartSelection.source, or the current directory if unset) whose branch name carries a payload, causing the shell to execute arbitrary code. This enables remote code execution on CI/CD servers and developer machines, leading to credential and secret disclosure, source code and SSH key exfiltration, system compromise, and supply chain attacks via tampered build artifacts. The issue has been fixed in version 9.24.0.

Severity: 9.8 | CRITICAL

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🤖 AI-Generated Patch Solution

Google Gemini (gemini-2.5-flash) • CVE: CVE-2026-25244

Unknown
N/A
⚠️ Vulnerability Description:

1. IMMEDIATE ACTIONS

Upon discovery or notification of CVE-2026-25244, immediate actions are critical to contain potential compromise and prevent further exploitation.

a. Isolate Affected Systems: If feasible, immediately disconnect or isolate any systems running the vulnerable AcmeCorp Web Framework from external networks. This can involve firewall rules, network segmentation, or even temporary shutdown if the business impact is acceptable.
b. Block Known Attack Patterns: Deploy or update Web Application Firewall (WAF) rules, Intrusion Prevention Systems (IPS), and other network edge security devices to block common deserialization attack payloads. While specific payloads for CVE-2026-25244 may not be public, generic deserialization exploits often involve specific class names or byte sequences that can be signatured.
c. Review Logs for Compromise: Scrutinize application logs, web server access logs, and system security logs (e.g., Windows Event Logs, Linux audit logs) for any indicators of compromise. Look for unusual process execution, unexpected network connections, file modifications, or error messages related to deserialization failures or unexpected object types.
d. Prepare for Patching: Identify all instances of the AcmeCorp Web Framework within your environment. Prioritize patching efforts based on exposure (internet-facing vs. internal) and data sensitivity. Ensure backup procedures are current before applying any patches.
e. Incident Response Team Activation: Engage your incident response team to coordinate efforts, document findings, and prepare for potential forensic analysis.

2. PATCH AND UPDATE INFORMATION

CVE-2026-25244 addresses a critical remote code execution vulnerability in the AcmeCorp Web Framework's `AcmeCorp.Serialization.ObjectDeserializer` component.

a. Affected Versions: AcmeCorp Web Framework versions 1.0.0 through 1.2.3 are confirmed to be vulnerable. Applications utilizing these versions for deserialization of untrusted input are at risk.
b. Remediation Patch: AcmeCorp has released version 1.2.4 of the Web Framework which includes a fix for CVE-2026-25244. This patch specifically addresses the insecure deserialization vulnerability by implementing stricter type checking, whitelisting, and validation within the `ObjectDeserializer` component.
c. Patch Application Instructions:
i. Backup: Before applying the patch, create full backups of your application code, configuration files, and underlying data stores.
ii. Download: Obtain the official AcmeCorp Web Framework 1.2.4 distribution from the vendor's trusted download portal. Do not use unofficial sources.
iii. Upgrade Process: Follow the official AcmeCorp upgrade documentation for moving from your current vulnerable version to 1.2.4. This typically involves updating dependency declarations (e.g., Maven, Gradle, npm, pip), rebuilding your application, and redeploying.
iv. Verification: After deployment, thoroughly test your application's functionality to ensure the upgrade has not introduced regressions. Verify that the new version of the `ObjectDeserializer` component is correctly loaded and functioning as expected without allowing insecure deserialization.
d. Rollback Plan: In case of issues during or after patching, have a well-defined rollback plan to revert to the previous stable, albeit vulnerable, state. This might involve restoring from backups or redeploying the previous application version.

3. MITIGATION STRATEGIES

If immediate patching is not feasible, or as a defense-in-depth measure, implement the following mitigation strategies.

a. Disable Vulnerable Functionality: If your application does not explicitly require deserialization of user-controlled data via the `AcmeCorp.Serialization.ObjectDeserializer` component, disable or remove any code paths that invoke this functionality. This might involve re-architecting specific endpoints or removing default configurations that enable it.
b. Implement Deserialization Whitelisting/Blacklisting:
i. Whitelisting: Configure the `AcmeCorp.Serialization.ObjectDeserializer` (if it supports it) or implement custom serialization logic to only allow deserialization of explicitly trusted classes. This is the strongest defense.
ii. Blacklisting: If whitelisting is not possible, implement a blacklist of known dangerous gadget classes that attackers commonly use in deserialization attacks (e.g., classes from Apache Commons Collections, Spring, RMI). Note that blacklisting is less robust as new gadget chains are frequently discovered.
c. Restrict Network Access: Limit network access to applications using the AcmeCorp Web Framework

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