CVE-2026-19873
Description
A flaw was found in HTML::FormFu for Perl. This vulnerability allows a remote attacker to cause a Denial of Service (DoS) by sending a specially crafted request with an unbounded repeat count to a Repeatable element. The application's process method reads the repeat count from the query string, leading to deep-cloning of the element's child subtree multiple times. This excessive cloning can exhaust memory and CPU resources, making the application unresponsive.
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.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory); DoS: Resource Consumption (Other); Reduce Performance
This issue can make the product perform more slowly. If an attacker can influence the number of iterations in the loop, then this performance problem might allow a denial of service by consuming more platform resources than intended.
Frequently Asked Questions
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