CVE-2026-84303

Katalog CVE

CVSS 6.3 · Medium EPSS 0,31%

Kerentanan Improper Handling of Case Sensitivity. Skor CVSS 4.0 6.3 (Medium) menurut github.com.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

1 September 2026

Terakhir diubah

9 September 2026

Status NVD

Deferred

CVSS 4.0

6.3 (Medium), sumber github.com
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-178: Improper Handling of Case Sensitivity
CWE-863: Incorrect Authorization

EPSS (30 hari)

0,31% peluang dieksploitasi; lebih tinggi dari 22,1% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/grpc/grpc-go/commit/db9482836c298f234c896cf82ab68cafc78237f8
• https://github.com/grpc/grpc-go/commit/ebba6f3f1b206e2b4dc4d1d5a96d18430302c2fe
• https://github.com/grpc/grpc-go/pull/9332
• https://github.com/grpc/grpc-go/pull/9335
• https://github.com/grpc/grpc-go/releases/tag/v1.83.1
• https://github.com/grpc/grpc-go/security/advisories/GHSA-qc2q-p7wx-3px3