Server-Side Request Forgery in Browser SSRF Policy

OpenClaw before 2026.4.14 contains a server-side request forgery vulnerability in browser SSRF policy that allows private-network navigation by default. Attackers can exploit this misconfiguration to access internal services or metadata endpoints through browser-driven requests.

Casky was already ahead

This CVE exploits attack patterns that Casky's 312matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.

Analysis

OpenClaw before version 2026.4.14 contains a critical server-side request forgery (SSRF) vulnerability stemming from overly permissive browser SSRF policies that fail to restrict private-network navigation by default. This misconfiguration allows attackers to leverage browser-driven requests to access internal services, private IP ranges, and metadata endpoints that should be isolated from external reach. Organizations running vulnerable OpenClaw instances face immediate risk of unauthorized access to sensitive internal infrastructure, cloud metadata services, and backend systems. The vulnerability is particularly dangerous because it exploits the implicit trust placed in browser-based requests, making it an effective pivot point for reconnaissance and lateral movement attacks.

Casky's 312 mapped security skills leverage Claude AI's extended reasoning to correlate attack patterns across MITRE ATT&CK techniques TA0001 (Reconnaissance) and TA0006 (Credential Access). Practitioners using Casky would observe detection findings that surface unusual browser-initiated requests to private IP ranges (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16), cloud metadata endpoints (169.254.169.254), and internal service ports. The platform's skills would flag CWE-918 (Server-Side Request Forgery) and CWE-1188 (Initialization with Hard-Coded Network Resource Configuration) patterns, revealing attacker behavior attempting to enumerate internal services or exfiltrate sensitive configuration data through SSRF payloads. These detections would appear as suspicious request chains originating from OpenClaw processes, enabling teams to identify compromise attempts before internal systems are fully breached.

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Casky Risk Score

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EPSS Probability

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Shodan Exposure

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GreyNoise Signal

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Composite risk scoring from EPSS, CISA KEV, Shodan, and GreyNoise — 21 security APIs correlated into a single Casky Risk Score. Coming in Casky Pro. Join early access →

312 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-43527.

analyzing-cloud-storage-access-patterns

cloud security · low

Run

analyzing-ios-app-security-with-objection

mobile security · low

Run

analyzing-malicious-url-with-urlscan

phishing defense · medium

Run

MITRE ATT&CK Techniques

TA0001 TA0006

Investigate the attack patterns behind CVE-2026-43527

Casky has 312 skills that investigate the attack patterns behind CVE-2026-43527. Run one and get CVSS-scored findings in 3 minutes.

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