Improper Handling of Case Sensitivity Affecting terraform-provider-tls package, versions <3.0.0-150200.5.26.2


Severity

Recommended
0.0
critical
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.31% (22nd percentile)

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  • Snyk IDSNYK-SLES154-TERRAFORMPROVIDERTLS-20875651
  • published13 Oct 2026
  • disclosed12 Oct 2026

Introduced: 12 Oct 2026

NewCVE-2026-84303  (opens in a new tab)
CWE-178  (opens in a new tab)
CWE-863  (opens in a new tab)

How to fix?

Upgrade SLES:15.4 terraform-provider-tls to version 3.0.0-150200.5.26.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream terraform-provider-tls package and not the terraform-provider-tls package as distributed by SLES. See How to fix? for SLES:15.4 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1