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HIGH

CVE-2026-18618

CVSS v3

7.5

HIGH

EPSS Score

0.8 %

exploit probability, as of 2026-10-17

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2026-18618 Red Hat Product Security13 products fixed

    ml-metdata: Bundled gRPC 1.46.3 (2022) with published HTTP/2 DoS CVEs — directly reachable on listener

  • RHSA-2026:60367 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: RHOAI 3.5 - Red Hat OpenShift AI

  • RHSA-2026:53263 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: RHOAI 3.3.6 - Red Hat OpenShift AI

  • RHSA-2026:53262 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: RHOAI 3.4.3 - Red Hat OpenShift AI

  • RHSA-2026:53261 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: RHOAI 2.25.10 - Red Hat OpenShift AI

Full record on NVD

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 The statically-linked gRPC stack in ml-metadata is outdated, making it vulnerable to known HTTP/2 denial of service (DoS) issues.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.

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2026-08-10
Last Modified
2026-08-11

Frequently asked questions

What is CVE-2026-18618?

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 The statically-linked gRPC stack in ml-metadata is outdated, making it vulnerable to known HTTP/2 denial of service (DoS) issues.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.

Is CVE-2026-18618 actively exploited?

Active exploitation of CVE-2026-18618 has not been confirmed. Its EPSS score was 0.8% on 2026-10-17, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-18618?

CVE-2026-18618 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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