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CVE-2026-19278— Stackrox: stackrox: privilege escalation via unanchored regular expressions in auth m2m role mappings

Quick assessment

Affected
Red Hat Red Hat Advanced Cluster Security 4
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 Security是美国Red Hat公司的一款集群安全防护软件。 Red Hat Advanced Cluster Security 4版本存在输入验证错误漏洞，该漏洞源于使用未锚定的正则表达式匹配M2M角色映射中的声明值，可能导致拥有有效OIDC令牌且声明值为配置模式超字符串的攻击者获得未授权访问角色，从而导致权限提升。

CVSS 6.8 · Medium EPSS 0.34% · P26

Possible ATT&CK Techniques 1 AI

T1136 · Create Account

Affected Version Matrix 1

VendorProduct Version RangeStatus
Red Hat Red Hat Advanced Cluster Security 4 any affected
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I. Basic Information for CVE-2026-19278

Vulnerability Information
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Vulnerability Title
Stackrox: stackrox: privilege escalation via unanchored regular expressions in auth m2m role mappings
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in StackRox/RHACS Central's Auth Machine-to-Machine (M2M) token exchange. When an administrator configures M2M role mappings, the system uses unanchored regular expressions for matching claim values. This allows an attacker with a valid OpenID Connect (OIDC) token, whose claim value is a superstring of a configured pattern, to gain unauthorized access to roles they were not intended to receive. This can lead to privilege escalation within the system.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
宽松定义的正则表达式
Source: CVE Program / CVE List V5
Vulnerability Title
Red Hat Advanced Cluster Security 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat Advanced Cluster Security是美国Red Hat公司的一款集群安全防护软件。 Red Hat Advanced Cluster Security 4版本存在输入验证错误漏洞，该漏洞源于使用未锚定的正则表达式匹配M2M角色映射中的声明值，可能导致拥有有效OIDC令牌且声明值为配置模式超字符串的攻击者获得未授权访问角色，从而导致权限提升。
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 Security 4 - cpe:/a:redhat:advanced_cluster_security:4

II. Public POCs for CVE-2026-19278

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III. Intelligence Information for CVE-2026-19278

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Vendor Advisories for CVE-2026-19278 (2)

Same Patch Batch · Red Hat · 2026-08-10 · 28 CVEs total

CVE-2026-18948 9.9 CRITICAL Feast: feast: unsafe dill deserialization of registry-stored udfs — rce on feature server
CVE-2026-14450 9.9 CRITICAL Maas-billing: maas api: privilege escalation via forged http headers due to missing authen
CVE-2026-18951 8.8 HIGH Odh-training-operator-rhel9: [trainer v2 security] trn-02: rhoai overlay aggregates trainj
CVE-2026-18950 8.8 HIGH Odh-dashboard: odh-dashboard: confused-deputy privilege escalation via unchecked roleref i
CVE-2026-18949 8.8 HIGH Odh-dashboard: odh-dashboard: clusterrole grants cluster-wide crud on secrets and rbac man
CVE-2026-18982 8.8 HIGH Odh-training-operator-rhel9: rhoai fork aggregates training job create onto native edit/ad
CVE-2026-18617 8.8 HIGH Data-science-pipelines-operator: dspo: mysql dsn parameter injection via customextraparams
CVE-2026-18608 8.7 HIGH Data-science-pipelines-operator: dspo: operator clusterrole grants pods/exec:*, kubeflow.o
CVE-2026-18947 8.5 HIGH Feast: feast: authorization bypass in /materialize endpoints enables dos via unauthorized
CVE-2026-71576 8.5 HIGH Multicluster-global-hub: multicluster-global-hub: manager trusts self-asserted evt.source(
CVE-2026-15467 8.1 HIGH Trustyai-service-operator: trustyai-service-operator: lmevaljob sidecar containers bypass
CVE-2026-15581 8.0 HIGH Trustyai-service-operator: trustyai-service-operator: tas internal service bypasses kube-r
CVE-2026-63622 7.8 HIGH Libvirt: swtpm privilege escalation via symlink following
CVE-2026-18941 7.7 HIGH Feast: feast-operator: feast: default authentication mode is no_auth — shared multi-tenant
CVE-2026-18621 7.6 HIGH Data-sciences-pipeline: dsp: v1 argo template path accepts arbitrary workflow spec, bypass
CVE-2026-19387 7.6 HIGH Gstreamer: gstreamer1-plugins-bad-free: gstreamer: heap out-of-bounds write in adpcmdec im
CVE-2026-18611 7.5 HIGH Data-science-pipelines-operator: dspo: cryptographically weak secret generation (math/rand
CVE-2026-18618 7.5 HIGH Ml-metdata: bundled grpc 1.46.3 (2022) with published http/2 dos cves — directly reachable
CVE-2026-19389 7.1 HIGH Gstreamer: gstreamer1-plugins-ugly-free: gstreamer: integer overflow/underflow in asfdemux
CVE-2026-18620 7.1 HIGH Data-sciences-pipeline: user-controlled serviceaccount for workflow pods without authoriza

Showing top 20 of 28 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Red Hat Advanced Cluster Security 4
Same vendor: Red Hat
Same weakness: CWE-625

V. Comments for CVE-2026-19278

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