Apache Camel DNS Component Input Validation and SSRF Flaw

Improper Input Validation, Server-Side Request Forgery (SSRF) vulnerability in Apache Camel DNS component. The camel-dns producers read DNS operation parameters - the resolver to query, the name or domain to look up, the record type and class, and the search term - from Exchange message headers whose constant values (DnsConstants.DNS_SERVER, DNS_NAME, DNS_DOMAIN, DNS_TYPE, DNS_CLASS, TERM) were the plain strings dns.server, dns.name, dns.domain, dns.type, dns.class and term. Because these names do not start with the Camel / camel prefix, HttpHeaderFilterStrategy - which blocks only the Camel header namespace on the HTTP boundary - let them pass from an inbound HTTP request straight into the Exchange. In a route that bridges an HTTP consumer (for example platform-http) into a dns: producer, any HTTP client could therefore set the dns.server header to make the dig producer build a SimpleResolver pointing at an attacker-controlled DNS server - a server-side request forgery via DNS, throu

Casky was already ahead

This CVE exploits attack patterns that Casky's 392matched 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

CVE-2026-48205 is a critical vulnerability in Apache Camel's DNS component that stems from improper input validation of DNS operation parameters read from Exchange message headers. Attackers can manipulate unvalidated header values—such as dns.server, dns.name, dns.domain, dns.type, dns.class, and term—to trigger server-side request forgery (SSRF) attacks. This affects any organization deploying Apache Camel with DNS functionality enabled, potentially allowing attackers to query arbitrary DNS servers, exfiltrate internal network information, or pivot to internal resources. The CVSS 9.1 critical rating reflects the ease of exploitation and high impact on confidentiality and integrity.

Casky's 392 matched security skills, powered by Claude's extended reasoning capabilities, detect the attack patterns underlying this vulnerability by mapping to three MITRE ATT&CK tactics: Initial Access (TA0001), Reconnaissance (TA0043), and Credential Access (TA0006). Practitioners using Casky would identify suspicious patterns including: unsanitized header injection attempts in Exchange message flows, unusual DNS resolution requests targeting internal IPs or sensitive domains, and lateral movement indicators from DNS query anomalies. Claude's reasoning engine correlates CWE-20 (improper input validation) with CWE-918 (SSRF) findings, surfacing IOCs like header tampering, DNS tunneling, and out-of-band data exfiltration attempts that typical signature-based detection would miss. Security teams gain visibility into how attackers chain reconnaissance activities through manipulated DNS requests to map internal networks before credential harvesting.

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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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392 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-48205.

Abuse of Public-Facing API: Mobile API Abuse

mobile security · low

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abusing-dpapi-for-credential-access

red teaming · high

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abusing-shadow-credentials-for-privesc

red teaming · high

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MITRE ATT&CK Techniques

TA0001 TA0043 TA0006

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