CVE-2026-84303 : Detail

CVE-2026-84303

2026-09-01
19h17 +00:00
Authorization problems
A01-Broken Access Control
2026-09-09
21h09 +00:00
CVE.org
NVD
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Deskripsi CVE

gRPC-Go is the Go language implementation of gRPC. Prior to 1.83.1, the xDS RBAC HTTP filter in internal/xds/httpfilter/rbac/rbac.go does not lowercase header matcher names in normalizeHeaderMatcher even though incoming metadata keys are lowercase. A DENY policy using a mixed-case name such as X-Role or User-Agent therefore does not match and fails open, allowing requests that should be rejected. The same case mismatch permits :Scheme or Grpc-Status to evade gRFC A41 validation and prevents Host from being rewritten to :authority. This issue is fixed in version 1.83.1.

Informasi CVE

Kelemahan Terkait

CWE-ID Nama Kelemahan Sumber
CWE-178 Improper Handling of Case Sensitivity
The product does not properly account for differences in case sensitivity when accessing or determining the properties of a resource, leading to inconsistent results.
CWE-863 Incorrect Authorization
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

Referensi

Informasi yang disajikan di CVE Find berasal dari beberapa sumber referensi yang dipilih dengan cermat. Data CVE disediakan oleh MITRE Corporation dan National Vulnerability Database (NVD). Katalog Known Exploited Vulnerabilities (KEV) bersumber dari Cybersecurity and Infrastructure Security Agency (CISA), sementara skor EPSS berasal dari FIRST.org. Selain itu, data mengenai kelemahan perangkat lunak (CWE) dan pola serangan umum (CAPEC) dikelola oleh MITRE Corporation, dan informasi tentang konfigurasi perangkat keras dan perangkat lunak (CPE) disediakan oleh NVD.