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

- 種別: advisory
- 関連技術: spring, java
- CVE: CVE-2026-59277
- 公開日時: 2026-08-20T00:00:00.000Z
- 情報源: Spring Security Advisories (https://spring.io/security/cve-2026-59277)
- パーマリンク: https://vulnpulse.app/items/spring-security-98471db2fc78

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…