DEBIAN-CVE-2026-84303
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-84303
- Import Source
- https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-84303.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2026-84303
- Upstream
- Published
- 2026-09-01T19:17:30Z
- Modified
- 2026-09-10T08:47:33Z
- Severity
-
- 6.3 (Medium) CVSS_V4 - 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 CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
Affected packages
Debian:12 / golang-google-grpc
Package
- Name
- golang-google-grpc
- Purl
- pkg:deb/debian/golang-google-grpc?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:13 / golang-google-grpc
Package
- Name
- golang-google-grpc
- Purl
- pkg:deb/debian/golang-google-grpc?arch=source&distro=trixie
Debian:14 / golang-google-grpc
Package
- Name
- golang-google-grpc
- Purl
- pkg:deb/debian/golang-google-grpc?arch=source&distro=forky