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CVE-2026-18544— Portieris is vulnerable to Image Policy Bypass via Unvalidated ownerReference

Quick assessment

Affected
IBM Portieris
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.

IBM Portieris是美国IBM公司的一款Kubernetes镜像安全准入控制工具。 IBM Portieris 0.5.0版本至0.14.2版本存在安全漏洞，该漏洞源于对pod所有者引用的授权不当，可能导致远程认证攻击者绕过镜像策略执行。

CVSS 8.1 · High EPSS 0.45% · P38

Affected Version Matrix 1

VendorProduct Version RangeStatus
IBM Portieris 0.5.0≤ 0.14.2 affected
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I. Basic Information for CVE-2026-18544

Vulnerability Information
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Vulnerability Title
Portieris is vulnerable to Image Policy Bypass via Unvalidated ownerReference
Source: CVE Program / CVE List V5
Vulnerability Description
IBM Portieris 0.5.0 through 0.14.2 could allow a remote authenticated attacker to bypass image policy enforcement due to improper authorization of pod owner references.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
IBM Portieris 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
IBM Portieris是美国IBM公司的一款Kubernetes镜像安全准入控制工具。 IBM Portieris 0.5.0版本至0.14.2版本存在安全漏洞，该漏洞源于对pod所有者引用的授权不当，可能导致远程认证攻击者绕过镜像策略执行。
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
IBM Portieris 0.5.0 ~ 0.14.2 cpe:2.3:a:ibm:portieris:0.5.0:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-18544

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III. Intelligence Information for CVE-2026-18544

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Vendor Advisories for CVE-2026-18544 (1)

Same Patch Batch · IBM · 2026-08-19 · 107 CVEs total

CVE-2026-15068 9.9 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16816 9.9 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16834 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16919 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16917 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16862 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16864 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16913 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16894 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16882 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16885 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16840 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16872 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16845 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16656 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16687 9.6 CRITICAL Power System Buffer Overflow
CVE-2026-16835 9.6 CRITICAL Power System Improper Certificate Validation
CVE-2026-16903 9.6 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16839 9.4 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16822 9.3 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS

Showing top 20 of 107 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same vendor: IBM
Same weakness: CWE-862

V. Comments for CVE-2026-18544

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