CVE-2026-92823
Libmodulemd: libmodulemd: missing decompressed-size limit when parsing compressed yaml
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What happened?
A flaw was found in libmodulemd. In builds with rpmio support enabled, compressed modulemd YAML is decompressed through a custom read handler that does not enforce a cumulative decompressed-size limit before parsing. An attacker who can supply a highly compressible compressed YAML file can cause excessive CPU and memory consumption, resulting in a denial of service.
Affected software and versions
| Software | Version information | Fixed version |
|---|---|---|
| libmodulemdRed Hat | Default status: affected | See vendor advisory |
| libmodulemdRed Hat | Default status: affected | See vendor advisory |
| libmodulemdRed Hat | Default status: affected | See vendor advisory |
| libmodulemdRed Hat | Default status: affected | See vendor advisory |
| rhoai/odh-ai-gateway-operator-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-core-bff-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-dashboard-operator-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-dashboard-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-data-science-pipelines-operator-controller-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-kf-notebook-controller-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-kserve-controller-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-kserve-llmisvc-controller-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-kserve-module-operator-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-kuberay-operator-controller-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-kube-rbac-proxy-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-llama-stack-k8s-operator-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-maas-controller-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-mlflow-operator-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-mlflow-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-mod-arch-agent-ops-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-mod-arch-automl-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-mod-arch-autorag-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-mod-arch-eval-hub-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-mod-arch-gen-ai-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-mod-arch-maas-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-mod-arch-mlflow-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-mod-arch-model-registry-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-model-controller-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-model-registry-operator-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-model-serving-api-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-notebook-controller-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-ogx-k8s-operator-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-ogx-module-operator-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-training-operator-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-trustyai-service-operator-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-workbenches-operator-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| openshift/ose-rhel-coreos-8Red Hat | Default status: affected | See vendor advisory |
| openshift/ose-rhel-coreos-9Red Hat | Default status: affected | See vendor advisory |
| openshift/ose-rhel-coreos-9Red Hat | Default status: affected | See vendor advisory |
Version information comes from the source record and can include unaffected products and exceptions. Distribution packages may contain backported fixes: an older upstream version alone does not prove a server is affected.
Is it being exploited?
This CVE was not listed in the CISA catalogue at our last retrieval. This does not establish that exploitation is absent.
How to respond
- Confirm the product, installed package version, and any configuration requirements in the vendor advisory.
- Follow the vendor’s remediation or workaround guidance in the references below. Structured fixed-version data is unavailable here; the publisher’s description may include a fix or workaround.
- Restart affected services if required, then verify the running version. Known exploitation may warrant investigation as well as patching.