Threats Tagged 'cve-2025-66570'
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Threats Tagged 'cve-2025-66570'
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CVE-2025-66570 is a critical authentication bypass vulnerability in versions of the yhirose cpp-httplib library prior to 0.27.0. The flaw allows attacker-controlled HTTP headers (REMOTE_ADDR, REMOTE_PORT, LOCAL_ADDR, LOCAL_PORT) to be injected and influence server-side metadata, logging, and authorization decisions due to header shadowing. Because the library processes client headers before adding its own internal metadata headers with the same names, downstream code that retrieves header values uses attacker-supplied data, enabling IP spoofing, log poisoning, and authorization bypass without authentication or user interaction. This vulnerability affects any server using vulnerable cpp-httplib versions and can lead to full compromise of confidentiality and integrity. The issue is fixed in version 0.27.0. European organizations using cpp-httplib in web services should urgently update to mitigate risk. Join the discussion | CVE Database V5 | 12/05/2025, 18:18:02 UTC Added: 12/05/2025, 18:30:19 UTC |
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