Moderate Vulnerability in fence-agents Packages: Information Disclosure via Cross-Origin Redirects
Summary
ALSA-2026:49927: Moderate: fence-agents security update. Affects fence-agents-aliyun versions < 4.2.1-129.el8_10.28. Fixed in 4.2.1-129.el8_10.28. How to fix ↓
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Background
The fence-agents packages are a collection of scripts designed for remote power management of cluster devices. They play a crucial role in managing the availability of nodes within a cluster by allowing administrators to forcibly restart and remove failed or unreachable nodes. This functionality is essential for maintaining the stability and performance of clustered environments, particularly in enterprise settings.
Vulnerability Detail
The vulnerability identified as CVE-2026-44431 in the fence-agents packages is related to urllib3, which allows for information disclosure through cross-origin redirects that can inadvertently forward sensitive headers. This could potentially expose sensitive information to unauthorized parties, leading to security breaches and data leaks. The vulnerability arises from improper handling of HTTP requests and responses, making it critical for users to address it promptly.
How To Fix
Minimum fixed version
4.2.1-129.el8_10.28
This is the first release that contains the fix.
sudo dnf update fence-agents-aliyunTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, users may consider disabling cross-origin requests in their applications until the package is updated. However, this is not a recommended long-term solution and should only be used if absolutely necessary.
Conclusion
The fence-agents packages have a moderate vulnerability (CVE-2026-44431) that can lead to information disclosure. It is crucial for users to update their packages to the patched version to mitigate risks. For those unable to update immediately, a temporary workaround is available, but it is not a long-term solution.
See every vulnerability recorded for fence-agents-aliyun →
FAQ
CVE-2026-44431 is a vulnerability in the fence-agents packages that allows for information disclosure through cross-origin redirects.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
The vulnerability could lead to unauthorized access to sensitive information, resulting in data breaches and security incidents.
You can update the packages using the command: sudo dnf update fence-agents-aliyun fence-agents-all ... (list all affected packages).
If immediate updates are not possible, consider disabling cross-origin requests as a temporary workaround.
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