CVE-2026-18618

Ml-metdata: bundled grpc 1.46.3 (2022) with published http/2 dos cves — directly reachable on listener

Published Aug 10, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
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 The statically-linked gRPC stack in ml-metadata is outdated, making it vulnerable to known HTTP/2 denial of service (DoS) issues.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

Vendor Workaround

To mitigate this issue, ensure that network policies are strictly enforced to limit access to the MLMD pod's port 8080. Restrict inbound connections to only essential KFP v2 driver pods and other designated DSP components. This measure reduces the attack surface by limiting potential in-cluster attackers who could exploit the gRPC HTTP/2 denial-of-service vulnerabilities.

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift_ai:3.5::el9
References
Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift_ai:2.25::el9
cpe:/a:redhat:openshift_ai:3.4::el9
References
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift_ai cpe:/a:redhat:openshift_ai:3.3::el9
References
Type Values Removed Values Added
Description 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 The statically-linked gRPC stack in ml-metadata is outdated, making it vulnerable to known HTTP/2 denial of service (DoS) issues.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.
Title Ml-metdata: bundled grpc 1.46.3 (2022) with published http/2 dos cves — directly reachable on listener
First Time appeared Redhat
Redhat openshift Ai
Weaknesses CWE-770
CPEs cpe:/a:redhat:openshift_ai
Vendors & Products Redhat
Redhat openshift Ai
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Oct 19, 2026, 11:45 AM
Reserved
Aug 3, 2026, 7:43 AM
Status
Awaiting Analysis
Published
Aug 10, 2026, 9:17 PM
Modified
Oct 19, 2026, 12:17 PM
Severity
Moderate
Public date
Aug 10, 2026, 6:49 PM