Critical Security Flaw in PCP Package: Red Hat Security Advisory RHSA-2026:73767
Summary
RHSA-2026:73767: Red Hat Security Advisory: pcp security update. Affects pcp versions < 0:5.3.7-19.el8_8.1. Fixed in 0:5.3.7-19.el8_8.1. How to fix ↓
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Background
The Performance Co-Pilot (PCP) is a framework and service for monitoring and managing system performance. It provides tools for collecting, storing, and analyzing performance metrics across various systems. The PCP package is widely used in enterprise environments for its ability to provide real-time insights into system performance. However, recent vulnerabilities have been identified that could potentially compromise the integrity and confidentiality of the data it handles.
Vulnerability Detail
The vulnerabilities identified in the PCP package, including CVE-2026-16524, CVE-2026-16526, CVE-2026-16527, and CVE-2026-16529, stem from improper handling of input data, which could lead to unauthorized access and manipulation of sensitive performance data. The ramifications of these vulnerabilities are severe, as they could allow attackers to gain elevated privileges, execute arbitrary code, or disrupt system operations. The vulnerabilities have a CVSS score of 8.8, indicating a high level of risk.
How To Fix
Minimum fixed version
0:5.3.7-19.el8_8.1
This is the first release that contains the fix.
sudo dnf update pcpTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate patching is not feasible, consider restricting access to the PCP service and monitoring logs for any unauthorized access attempts. Additionally, implement network segmentation to limit exposure to potential attacks.
Conclusion
The vulnerabilities in the PCP package pose significant risks to system performance monitoring and data integrity. It is crucial to apply the recommended updates promptly to mitigate these risks and ensure the security of your systems.
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FAQ
The PCP package is a performance monitoring framework that provides tools for collecting and analyzing system performance metrics.
The vulnerabilities could allow unauthorized access, data manipulation, and potential system disruptions, leading to severe security risks.
You can use the Vulert playground at Vulert Scanner to check if your application is impacted by this vulnerability without needing to sign up.
Implement workarounds such as restricting access to the PCP service and monitoring for unauthorized access attempts until you can apply the patch.
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