CVE-2026-55588
Description
A flaw was found in ORAS (OCI Registry As Storage) CLI. A remote attacker, by operating a malicious OCI (Open Container Initiative) registry that returns a cyclic referrer graph, could cause unbounded recursion and memory growth in the client. This vulnerability leads to a client-side Denial of Service (DoS), exhausting CPU and memory resources and potentially halting automation or CI/CD pipelines that interact with untrusted registry metadata. This issue does not allow for arbitrary code execution or data manipulation.
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
To mitigate this issue, when using the `oras discover` command, specify a limited recursion depth using the `--depth` option. For example, `oras discover --depth 1 <artifact>`. Additionally, avoid using ORAS CLI against untrusted OCI registries or metadata.
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
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