CVE-2026-44909
Description
A flaw was found in Proxygen. A remote, unauthenticated attacker could exploit a missing slow-consumer detection mechanism in the HTTP/2 protocol. By manipulating HTTP/2 flow-control settings, an attacker can force the server to buffer large amounts of data in memory indefinitely. This can lead to unbounded memory growth, causing resource exhaustion, service degradation, or a denial of service (DoS) for affected systems.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory); DoS: Resource Consumption (Other)
When allocating resources without limits, an attacker could prevent other systems, applications, or processes from accessing the same type of resource. It can be easy for an attacker to consume many resources by rapidly making many requests or causing larger resources to be used than is needed.
Frequently Asked Questions
Not sure what something means? Check out our Security Glossary.
Want to get errata notifications? Sign up here.
