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CVE-2026-73834— Must-gather: must-gather: embedded secret data in acm wrapper crs collected without redaction

Quick assessment

Affected
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.11
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Red Hat Advanced Cluster Management for Kubernetes是美国Red Hat公司的一个Kubernetes多集群管理平台。 Red Hat Advanced Cluster Management for Kubernetes 存在加密问题漏洞，该漏洞源于must-gather组件在收集嵌入Secret数据的ACM包装自定义资源时未进行脱敏处理，可能导致管理员运行must-gather时，凭据和令牌以明文形式捕获在归档中，从而将敏感信息暴露给有权访问归档的人员。

CVSS 5.5 · Medium EPSS 0.11% · P1

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2026-73834

Vulnerability Information
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Vulnerability Title
Must-gather: must-gather: embedded secret data in acm wrapper crs collected without redaction
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the must-gather component of Red Hat Advanced Cluster Management for Kubernetes. Certain ACM wrapper Custom Resources that embed Secret data are collected without redaction. When an administrator runs must-gather, credentials and tokens are captured in cleartext in the resulting archive, potentially exposing sensitive information to anyone with access to the archive.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
敏感数据的明文存储
Source: CVE Program / CVE List V5
Vulnerability Title
Red Hat Advanced Cluster Management for Kubernetes 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat Advanced Cluster Management for Kubernetes是美国Red Hat公司的一个Kubernetes多集群管理平台。 Red Hat Advanced Cluster Management for Kubernetes 存在加密问题漏洞，该漏洞源于must-gather组件在收集嵌入Secret数据的ACM包装自定义资源时未进行脱敏处理，可能导致管理员运行must-gather时，凭据和令牌以明文形式捕获在归档中，从而将敏感信息暴露给有权访问归档的人员。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.11 1787263322 ~ * cpe:/a:redhat:acm:2.11::el9
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.13 1787260453 ~ * cpe:/a:redhat:acm:2.13::el9
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.14 1787189811 ~ * cpe:/a:redhat:acm:2.14::el9
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.15 1787238730 ~ * cpe:/a:redhat:acm:2.15::el9
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.16 1787234748 ~ * cpe:/a:redhat:acm:2.16::el9
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.17 1787228698 ~ * cpe:/a:redhat:acm:2.17::el9

II. Public POCs for CVE-2026-73834

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III. Intelligence Information for CVE-2026-73834

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Vendor Advisories for CVE-2026-73834 (8)

Same Patch Batch · Red Hat · 2026-08-18 · 14 CVEs total

CVE-2026-12564 9.6 CRITICAL Automation-controller: automation-controller: kubernetes service account token exfiltratio
CVE-2026-18963 9.1 CRITICAL Keycloak-services: keycloak-services: unauthenticated account takeover via reset-credentia
CVE-2026-66793 8.8 HIGH Governance-policy-addon-controller: governance-policy-addon-controller: arbitrary containe
CVE-2026-75924 8.7 HIGH Managed-serviceaccount: managed-serviceaccount: hub addon-manager clusterrole grants clust
CVE-2026-71365 7.7 HIGH Awx: webhook status callback ssrf leaks the git pat
CVE-2026-15571 7.3 HIGH Keycloak-services: keycloak-services: predictable account-linking hash enables account tak
CVE-2026-66780 6.5 MEDIUM Submariner-operator: broker serviceaccount secret (token + ca) logged in full at trace ver
CVE-2026-75032 6.3 MEDIUM Bluez: bluez: out-of-bounds read in avrcp parse_media_element and parse_media_folder
CVE-2026-66782 5.8 MEDIUM Submariner-operator: operator clusterrole grants cluster-wide create/update on all configm
CVE-2026-75485 5.5 MEDIUM Must-gather: /tmp/kubeconfig retention
CVE-2026-66781 5.4 MEDIUM Submariner-operator: pprof debug endpoint enabled by default on 0.0.0.0:8082 without authe
CVE-2026-19608 5.3 MEDIUM Keycloak-services: keycloak-services: name-only group claims let same-name groups satisfy
CVE-2026-66783 4.4 MEDIUM Submariner-operator: release workflow consumes same-org composite action via mutable @deve

IV. Related Vulnerabilities

Same product: Red Hat Advanced Cluster Management for Kubernetes 2.11
Same vendor: Red Hat
Same weakness: CWE-312

V. Comments for CVE-2026-73834

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