CVE-2026-57987 in Edge
Summary
by MITRE • 07/04/2026
Server-side request forgery (ssrf) in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
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Analysis
by VulDB Data Team • 07/04/2026
Server-side request forgery vulnerabilities in Microsoft Edge Chromium-based browsers represent a critical security weakness that enables attackers to manipulate the browser's handling of network requests and potentially bypass security controls. This vulnerability specifically affects the server-side processing mechanisms within the browser's architecture, allowing malicious actors to craft requests that appear to originate from legitimate internal systems while actually being generated by external adversaries.
The technical flaw exploits how Microsoft Edge processes certain types of network requests through its Chromium foundation, particularly when handling web resources or API calls that involve redirection or proxy mechanisms. Attackers can leverage this vulnerability to force the browser into making requests to internal network services that should normally be inaccessible from external networks, effectively creating a pathway for unauthorized access to backend systems. This occurs because the browser fails to properly validate or sanitize request targets, allowing crafted URLs or resource identifiers to traverse network boundaries without appropriate authorization checks.
The operational impact of this SSRF vulnerability extends beyond simple information disclosure, as it can enable attackers to perform reconnaissance on internal network infrastructure, access sensitive data stored in backend services, and potentially escalate privileges within the affected environment. When combined with other attack vectors, such as credential harvesting or exploitation of additional vulnerabilities, the SSRF weakness can serve as a critical initial access point for comprehensive system compromise. The vulnerability affects not only individual user sessions but also corporate environments where Edge is deployed as a standard browser across multiple endpoints.
Mitigation strategies should focus on implementing strict network segmentation controls, deploying web application firewalls to monitor and filter suspicious requests, and ensuring proper input validation within the browser's handling of network resources. Organizations should also consider implementing network access controls that prevent internal service enumeration and establish robust monitoring for unusual outbound request patterns that might indicate exploitation attempts. Security teams must address this vulnerability through comprehensive patch management programs and regular security assessments to identify similar weaknesses in other browser components or related systems.
This vulnerability aligns with CWE-918, which specifically addresses server-side request forgery, and corresponds to techniques described in the MITRE ATT&CK framework under T1071.502 for application layer protocol usage and T1190 for exploit public-facing application vulnerabilities. The attack surface is particularly concerning given Microsoft Edge's widespread deployment across enterprise environments where network boundaries are often less strictly enforced than in more controlled security configurations.