Bug 2570274 (CVE-2026-125871)

Summary: CVE-2026-125871 misp-modules: misp-modules: Information disclosure via SSRF in sourcecache module
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerability-draftAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in misp-modules. Due to missing target address validation in the sourcecache expansion module, an authenticated attacker with permission to create or modify URL attributes can trigger a Server-Side Request Forgery (SSRF) vulnerability. By submitting crafted URLs pointing to restricted internal network endpoints or local files, the attacker can force the server to retrieve and return those resources. This flaw can lead to sensitive information disclosure, potentially exposing cloud credentials, internal service data, or local system files.
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Description OSIDB Bzimport 2026-11-10 19:47:30 UTC 
The sourcecache expansion module in MISP Modules (misp-modules) contains a Server-Side Request Forgery (SSRF) vulnerability. When a user with permission to create or modify attributes of type 'link' or 'url' submits an attribute value, the module passes the URL directly to its internal archiving function without any validation of the target address. An attacker can therefore craft a URL pointing to loopback addresses (e.g., 127.0.0.1), private network ranges, link-local addresses, or cloud metadata endpoints (e.g., 169.254.169.254). The MISP server will issue an HTTP request to that target and store the response body in the event, effectively exfiltrating data from internal services to the attacker through the MISP interface. Non-HTTP schemes such as file:// are also accepted, potentially allowing local file disclosure. The vulnerability requires an authenticated MISP user with the ability to create or edit attributes of the affected types. The security impact is information disclosure from internal services reachable by the MISP server, including sensitive data such as cloud credentials, internal application data, or local files.