cve-2026-59277 - LOW - Spring Security InetAddressMatchers Incomplete Internal Network Classification

Spring Security's InetAddressMatchers utility provides matchInternal() and matchExternal() builders for constructing an InetAddressMatcher that classifies a given IP address as belonging to an internal (private) or external (public) network. The internal address classification did not recognize the IPv4 and IPv6 "any local" addresses ( 0.0.0.0 and :: ) as internal. As a result, matchExternal() incorrectly classified these addresses as external, and matchInternal() failed to classify them as internal. Your application may be affected if the following are true: You use InetAddressMatchers.match…

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