---
id: CVE-2026-18618
title: A flaw was found in ml-metadata
summary: >-
  A flaw was found in ml-metadata. The statically-linked gRPC stack in
  ml-metadata is outdated, making it vulnerable to known HTTP/2 denial of
  service (DoS) issues. An in-cluster attacker, with network access to the MLMD
  pod, could exploit…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-770
vendor: Red Hat
product: rhoai/odh-mlmd-grpc-server-rhel9
affected:
  - rhoai/odh-mlmd-grpc-server-rhel9 (all versions)
  - rhoai/odh-mlmd-grpc-server-rhel9 (all versions)
  - rhoai/odh-mlmd-grpc-server-rhel9 (all versions)
  - rhoai/odh-latency-predictor-prediction-rhel9 (all versions)
  - rhoai/odh-latency-predictor-training-rhel9 (all versions)
published: '2026-08-10'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T12:17:11.560'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-18618'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2026:53261'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:53262'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:53263'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:60367'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-18618'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2510313'
    label: secalert@redhat.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-18618.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-18618'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-18618'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-08-11T15:34:51.548217Z'
epss: 0.00827
epssPercentile: 0.55743
ingestedAt: '2026-09-21T11:35:54.435Z'
patched:
  - openshift_ai 2.25
  - openshift_ai 3.3
  - openshift_ai 3.4
  - openshift_ai 3.5
---

## Overview

A flaw was found in ml-metadata. The statically-linked gRPC stack in ml-metadata is outdated, making it vulnerable to known HTTP/2 denial of service (DoS) issues. An in-cluster attacker, with network access to the MLMD pod, could exploit these vulnerabilities by sending specially crafted HTTP/2 requests. This could lead to a denial of service by crashing the MLMD pod, disrupting all pipeline runs in the affected namespace.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **RHSA-2026:53261** · Red Hat · fixed in: Red Hat OpenShift AI 2.25 · released 2026-08-11 · [advisory](https://access.redhat.com/errata/RHSA-2026:53261)
- **RHSA-2026:53263** · Red Hat · fixed in: Red Hat OpenShift AI 3.3 · released 2026-08-11 · [advisory](https://access.redhat.com/errata/RHSA-2026:53263)
- **RHSA-2026:53262** · Red Hat · fixed in: Red Hat OpenShift AI 3.4 · released 2026-08-11 · [advisory](https://access.redhat.com/errata/RHSA-2026:53262)
- **RHSA-2026:60367** · Red Hat · fixed in: Red Hat OpenShift AI 3.5 · released 2026-08-26 · [advisory](https://access.redhat.com/errata/RHSA-2026:60367)