RHSA-2026:91216

Vulnerability from csaf_redhat - Published: 2026-10-27 18:29 - Updated: 2026-11-03 06:21
Summary
Red Hat Security Advisory: Red Hat Cost Management On-Premise container image update
Severity
Important
Notes
Topic: Updated container image for Red Hat Cost Management On-Premise is now available.
Details: Red Hat Cost Management On-Premise provides cost visibility and analysis for on-premise OpenShift environments. This update includes the latest bug fixes and enhancements.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

A flaw was found in the `encoding/xml` package of Go. The `DecodeElement` function failed to correctly track recursion depth, which could lead to stack exhaustion. A remote attacker could exploit this vulnerability by providing a specially crafted XML input, resulting in a Denial of Service (DoS) for the affected application.

CWE-776 - Improper Restriction of Recursive Entity References in DTDs
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Cost Management On-Premise 1:registry.redhat.io/costmanagement/costmanagement-ingress-rhel9@sha256:58bcb61c40b0c1b44f613608ec30d857b1d5e4c633b6982a83fdb6064b79d941_amd64 —
Vendor Fix fix
Workaround
Threats
Impact Important

A flaw was found in `net/url`, a component of `golang`. This vulnerability arises when resolving relative paths that contain numerous parent directory ('..') segments. A remote attacker could exploit this by providing a specially crafted path, leading to quadratic time complexity and excessive memory allocation. This can result in a Denial of Service (DoS) due to resource exhaustion.

CWE-770 - Allocation of Resources Without Limits or Throttling
Affected products
Fixed 1 product, the same list as for CVE-2026-56859
Threats
Impact Important

A flaw was found in gRPC-Go. Servers created with xds.NewGRPCServer() can be exploited by a remote client sending a malformed RPC request that lacks the required :authority or Host headers. This can trigger an index-out-of-bounds panic, leading to the termination of the entire server process and a Denial of Service (DoS). In some deployments, this attack can be unauthenticated.

CWE-125 - Out-of-bounds Read
Affected products
Fixed 1 product, the same list as for CVE-2026-56859
Threats
Impact Important
References
URL Category
https://access.redhat.com/errata/RHSA-2026:91216 self
https://access.redhat.com/articles/7148128 external
https://access.redhat.com/security/cve/CVE-2026-56859 external
https://access.redhat.com/security/cve/CVE-2026-56860 external
https://access.redhat.com/security/cve/CVE-2026-84445 external
https://access.redhat.com/security/updates/classi… external
https://access.redhat.com/security/updates/classi… external
https://docs.redhat.com/en/documentation/cost_man… external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2026-56859 self
https://bugzilla.redhat.com/show_bug.cgi?id=2515840 external
https://www.cve.org/CVERecord?id=CVE-2026-56859 external
https://nvd.nist.gov/vuln/detail/CVE-2026-56859 external
https://go.dev/cl/803320 external
https://go.dev/issue/80481 external
https://groups.google.com/g/golang-announce/c/94p… external
https://pkg.go.dev/vuln/GO-2026-6088 external
https://access.redhat.com/security/cve/CVE-2026-56860 self
https://bugzilla.redhat.com/show_bug.cgi?id=2515820 external
https://www.cve.org/CVERecord?id=CVE-2026-56860 external
https://nvd.nist.gov/vuln/detail/CVE-2026-56860 external
https://go.dev/cl/803681 external
https://go.dev/issue/80494 external
https://pkg.go.dev/vuln/GO-2026-6218 external
https://access.redhat.com/security/cve/CVE-2026-84445 self
https://bugzilla.redhat.com/show_bug.cgi?id=2533175 external
https://www.cve.org/CVERecord?id=CVE-2026-84445 external
https://nvd.nist.gov/vuln/detail/CVE-2026-84445 external
https://github.com/grpc/grpc-go/commit/3822494d8e… external
https://github.com/grpc/grpc-go/commit/8668b69c16… external
https://github.com/grpc/grpc-go/commit/93e31b4854… external
https://github.com/grpc/grpc-go/issues/9354 external
https://github.com/grpc/grpc-go/pull/9365 external
https://github.com/grpc/grpc-go/pull/9366 external
https://github.com/grpc/grpc-go/pull/9367 external
https://github.com/grpc/grpc-go/releases/tag/v1.82.2 external
https://github.com/grpc/grpc-go/releases/tag/v1.83.2 external
https://github.com/grpc/grpc-go/security/advisori… external

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          "text": "This is an Important denial of service flaw in the Go `net/url` package. Applications built with Go that process untrusted URLs containing parent directory segments (\u0027..\u0027) may be vulnerable to excessive resource consumption due to quadratic time complexity in path resolution. This can lead to a denial of service, impacting the availability of affected services.",
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          "category": "summary",
          "text": "google.golang.org/grpc: gRPC-Go: Denial of Service via malformed RPC requests",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This vulnerability is rated as an Important severity impact because an unauthenticated remote client can crash the host daemon, causing an immediate denial of service across exposed endpoints. The issue specifically threatens deployments utilizing xDS-managed gRPC servers, as requests that omit standard routing authority parameters cause the application to crash on an unhandled slice lookup. Standard gRPC server implementations that do not configure xDS control plane routing are not susceptible to this failure mode. Furthermore, in environments enforcing mutual transport layer security (mTLS), successful transport authentication is required before reaching the vulnerable routing stage, restricting potential exploitation to authenticated peers.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Cost Management On-Premise 1:registry.redhat.io/costmanagement/costmanagement-ingress-rhel9@sha256:58bcb61c40b0c1b44f613608ec30d857b1d5e4c633b6982a83fdb6064b79d941_amd64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-84445"
        },
        {
          "category": "external",
          "summary": "RHBZ#2533175",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2533175"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-84445",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-84445"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-84445",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84445"
        },
        {
          "category": "external",
          "summary": "https://github.com/grpc/grpc-go/commit/3822494d8ea03b992c089fd2a195f041762fffb7",
          "url": "https://github.com/grpc/grpc-go/commit/3822494d8ea03b992c089fd2a195f041762fffb7"
        },
        {
          "category": "external",
          "summary": "https://github.com/grpc/grpc-go/commit/8668b69c167df908b6b3666dcbf40992b9e932a4",
          "url": "https://github.com/grpc/grpc-go/commit/8668b69c167df908b6b3666dcbf40992b9e932a4"
        },
        {
          "category": "external",
          "summary": "https://github.com/grpc/grpc-go/commit/93e31b48545e2a8aaeb6e06b47fb249f94e6297f",
          "url": "https://github.com/grpc/grpc-go/commit/93e31b48545e2a8aaeb6e06b47fb249f94e6297f"
        },
        {
          "category": "external",
          "summary": "https://github.com/grpc/grpc-go/issues/9354",
          "url": "https://github.com/grpc/grpc-go/issues/9354"
        },
        {
          "category": "external",
          "summary": "https://github.com/grpc/grpc-go/pull/9365",
          "url": "https://github.com/grpc/grpc-go/pull/9365"
        },
        {
          "category": "external",
          "summary": "https://github.com/grpc/grpc-go/pull/9366",
          "url": "https://github.com/grpc/grpc-go/pull/9366"
        },
        {
          "category": "external",
          "summary": "https://github.com/grpc/grpc-go/pull/9367",
          "url": "https://github.com/grpc/grpc-go/pull/9367"
        },
        {
          "category": "external",
          "summary": "https://github.com/grpc/grpc-go/releases/tag/v1.82.2",
          "url": "https://github.com/grpc/grpc-go/releases/tag/v1.82.2"
        },
        {
          "category": "external",
          "summary": "https://github.com/grpc/grpc-go/releases/tag/v1.83.2",
          "url": "https://github.com/grpc/grpc-go/releases/tag/v1.83.2"
        },
        {
          "category": "external",
          "summary": "https://github.com/grpc/grpc-go/security/advisories/GHSA-2v4p-qf9q-27wj",
          "url": "https://github.com/grpc/grpc-go/security/advisories/GHSA-2v4p-qf9q-27wj"
        }
      ],
      "release_date": "2026-09-14T16:11:41.401000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-10-27T18:29:55+00:00",
          "details": "The container image provided by this update can be downloaded from the Red Hat container registry at registry.redhat.io using the \"podman pull\" command.",
          "product_ids": [
            "Red Hat Cost Management On-Premise 1:registry.redhat.io/costmanagement/costmanagement-ingress-rhel9@sha256:58bcb61c40b0c1b44f613608ec30d857b1d5e4c633b6982a83fdb6064b79d941_amd64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:91216"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat Cost Management On-Premise 1:registry.redhat.io/costmanagement/costmanagement-ingress-rhel9@sha256:58bcb61c40b0c1b44f613608ec30d857b1d5e4c633b6982a83fdb6064b79d941_amd64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "google.golang.org/grpc: gRPC-Go: Denial of Service via malformed RPC requests"
    }
  ]
}



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