Bug 2525241 (CVE-2026-59277)

Summary: CVE-2026-59277 org.springframework.security/spring-security-core: Spring Security: Information disclosure due to incomplete internal network classification
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: aschwart, aszczucz, boliveir, drichtar, gmalinko, janstey, mposolda, pdelbell, pjindal, rmartinc, rstepani, sdawley, ssilvert, sthorger, vmuzikar
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Spring Security 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. In Spring Security 7.1.0, 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.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-08-27 20:19:19 UTC
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.
Spring Security 7.1.0