High-Severity RCE Vulnerabilities Found in Angular Language Service Extension
Severity: High (Score: 74.0)
Sources: Cybersecuritynews, Gbhackers
Published: · Updated:
Keywords: angular, code, language, service, extension, vulnerabilities, remote
Severity indicators: vulnerabilities, rce, ot
Summary
Multiple high-severity vulnerabilities have been identified in the Angular Language Service extension for Visual Studio Code, potentially allowing remote code execution (RCE) attacks. These vulnerabilities stem from insecure handling of user-controlled input and unsafe configuration loading, affecting all versions prior to 21.2.4. Attackers can exploit these flaws through malicious project files and dependencies. The vulnerabilities are tracked under GitHub advisory GHSA-ccq4-xmxr-8hcq. Developers using the extension are at risk, and a patch has been released to address these issues. Users are urged to update to the latest version to mitigate the risks associated with these vulnerabilities. Key Points: • High-severity RCE vulnerabilities found in Angular Language Service extension. • Affected versions include all prior to 21.2.4; patch available in the latest release. • Exploitation can occur via malicious project files and unsafe configuration loading.
Detailed Analysis
**Impact** Developers using the Angular Language Service Visual Studio Code extension (Angular.ng-template) are affected globally. The vulnerabilities enable remote code execution (RCE) attacks through malicious project files and dependencies, potentially compromising development environments. This may lead to unauthorized code execution, data theft, or supply chain contamination, impacting software development workflows and operational security. No specific sectors or geographic regions were detailed. **Technical Details** The attack vector involves exploitation of insecure handling of user-controlled input and unsafe configuration loading within the extension. Attackers leverage malicious project files and dependencies to trigger RCE. The vulnerabilities affect all versions prior to 21.2.4 and are tracked under GitHub advisory GHSA-ccq4-xmxr-8hcq. No specific CVE identifiers or malware/tool names were provided. The exploitation occurs during the development phase, targeting the execution stage of the kill chain. **Recommended Response** Apply the latest Angular Language Service extension update, version 21.2.4 or later, immediately to remediate the vulnerabilities. Monitor development environments for unusual activity related to project file handling and dependency loading. Implement strict validation of project files and dependencies before use. No additional IOCs or detection signatures were provided in the source materials.
Source articles (2)
- Angular Language Service Extension Flaws Allow Remote Code Execution — Gbhackers · 2026-05-26
Multiple high-severity vulnerabilities have been discovered in the Angular Language Service VS Code extension (Angular.ng-template), exposing developers to remote code execution (RCE) attacks through… - Multiple Angular Language Service Extension Vulnerabilities Enable RCE Attacks — Cybersecuritynews · 2026-05-26
A set of high-severity vulnerabilities has been identified in the Angular Language Service Visual Studio Code extension (Angular.ng-template), potentially exposing developers to remote code execution…
Timeline
- 2026-05-26 — Vulnerabilities disclosed: Multiple high-severity vulnerabilities in Angular Language Service extension identified, exposing developers to RCE attacks.
- 2026-05-26 — Patch released: A patch has been issued for the Angular Language Service extension, addressing the identified vulnerabilities.
Related entities
- Remote Code Execution (Attack Type)
- Zero-day Exploit (Attack Type)
- CWE-20 - Improper Input Validation (Cwe)
- angular.ng (Domain)
- T1203 - Exploitation for Client Execution (Mitre Attack)
- Visual Studio Code (Platform)