Critical Security Flaw in librabbitmq: Heap Buffer Overflow Vulnerability
Summary
ALSA-2026:84795: Important: librabbitmq security update. Affects librabbitmq versions < 0.14.0-3.el10_2.1. Fixed in 0.14.0-3.el10_2.1. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
librabbitmq is an Advanced Message Queuing Protocol (AMQP) client library that enables communication with AMQP servers using protocol version 0-9-1. It is widely used in applications that require reliable messaging and queuing capabilities. However, a recently discovered vulnerability poses a significant risk to users of this library, potentially leading to denial of service.
Vulnerability Detail
The vulnerability identified as CVE-2026-44236 is a heap buffer overflow in the librabbitmq library. This flaw can be exploited by an attacker to cause a denial of service, which means that legitimate users may be unable to access the service. The issue arises from improper handling of memory allocation, allowing an attacker to manipulate the heap and execute arbitrary code or crash the application. This vulnerability affects all versions prior to 0.14.0-3.el10_2.1.
How To Fix
Minimum fixed version
0.14.0-3.el10_2.1
This is the first release that contains the fix.
sudo dnf update librabbitmqTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, you may consider restricting access to the AMQP server to trusted IP addresses only, thereby minimizing the risk of exploitation until the package can be updated.
Conclusion
The librabbitmq library has a critical vulnerability that can lead to denial of service. Users are strongly advised to update to the latest patched version to mitigate risks. Utilizing tools like Vulert can help monitor for such vulnerabilities in your applications.
See every vulnerability recorded for librabbitmq →
FAQ
CVE-2026-44236 is a security vulnerability in the librabbitmq library that allows for a heap buffer overflow, potentially leading to denial of service.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. By uploading your manifest file, you can quickly determine if your application is impacted by this vulnerability.
Exploitation of this vulnerability can lead to denial of service, meaning that legitimate users may be unable to access the messaging service provided by librabbitmq.
Yes, a patch is available in version 0.14.0-3.el10_2.1 of the librabbitmq package. It is recommended to update to this version or later.
You can update your librabbitmq package by running the command 'sudo dnf update librabbitmq librabbitmq-devel librabbitmq-tools' in your terminal.
Related vulnerabilities
Recent vulnerabilities recorded for librabbitmq.
