CVE-2026-86469: MLflow — MEDIUM

A flaw was found in GLib2. When g_file_replace() is used with G_FILE_CREATE_REPLACE_DESTINATION and creating the .goutputstream-XXXXXX temporary file fails, the library unlinks the destination and recreates it without exclusive creation or symlink protection. A local attacker who can write to the...

Full CISO analysis pending enrichment.

What systems are affected?

Package	Ecosystem	Vulnerable Range	Patched
MLflow	pip	—	No patch
28.6KOpenSSF 5.4695 dependentsPushed 5d ago20% patched~68d to patchFull package profile →
MLflow	pip	—	No patch
28.6KOpenSSF 5.4695 dependentsPushed 5d ago20% patched~68d to patchFull package profile →
MLflow	pip	—	No patch
28.6KOpenSSF 5.4695 dependentsPushed 5d ago20% patched~68d to patchFull package profile →
glib2	—	—	No patch
mingw-glib2	—	—	No patch
openshift/ose-rhel-coreos-8	—	—	No patch
openshift/ose-rhel-coreos-9	—	—	No patch
rhoai/odh-ai-gateway-operator-rhel9	—	—	No patch
rhoai/odh-core-bff-rhel9	—	—	No patch
rhoai/odh-dashboard-operator-rhel9	—	—	No patch
rhoai/odh-dashboard-rhel9	—	—	No patch
rhoai/odh-data-science-pipelines-operator-controller-rhel9	—	—	No patch
rhoai/odh-kf-notebook-controller-rhel9	—	—	No patch
rhoai/odh-kserve-controller-rhel9	—	—	No patch
rhoai/odh-kserve-llmisvc-controller-rhel9	—	—	No patch
rhoai/odh-kserve-module-operator-rhel9	—	—	No patch
rhoai/odh-kube-rbac-proxy-rhel9	—	—	No patch
rhoai/odh-kuberay-operator-controller-rhel9	—	—	No patch
rhoai/odh-llama-stack-k8s-operator-rhel9	—	—	No patch
rhoai/odh-maas-controller-rhel9	—	—	No patch
rhoai/odh-mod-arch-agent-ops-rhel9	—	—	No patch
rhoai/odh-mod-arch-automl-rhel9	—	—	No patch
rhoai/odh-mod-arch-autorag-rhel9	—	—	No patch
rhoai/odh-mod-arch-eval-hub-rhel9	—	—	No patch
rhoai/odh-mod-arch-gen-ai-rhel9	—	—	No patch
rhoai/odh-mod-arch-maas-rhel9	—	—	No patch
rhoai/odh-mod-arch-model-registry-rhel9	—	—	No patch
rhoai/odh-model-controller-rhel9	—	—	No patch
rhoai/odh-model-registry-operator-rhel9	—	—	No patch
rhoai/odh-model-serving-api-rhel9	—	—	No patch
rhoai/odh-notebook-controller-rhel9	—	—	No patch
rhoai/odh-ogx-k8s-operator-rhel9	—	—	No patch
rhoai/odh-ogx-module-operator-rhel9	—	—	No patch
rhoai/odh-training-operator-rhel9	—	—	No patch
rhoai/odh-trustyai-service-operator-rhel9	—	—	No patch
rhoai/odh-workbenches-operator-rhel9	—	—	No patch

How severe is it?

CVSS 3.1

5.3 / 10

EPSS

N/A

Exploitation Status

No known exploitation

Sophistication

N/A

What is the attack surface?

AVLocal

ACHigh

PRLow

UINone

SUnchanged

CNone

IHigh

ALow

What should I do?

No patch available

Monitor for updates. Consider compensating controls or temporary mitigations.

Which compliance frameworks are affected?

Compliance analysis pending. Sign in for full compliance mapping when available.

Frequently Asked Questions

What is CVE-2026-86469?

A flaw was found in GLib2. When g_file_replace() is used with G_FILE_CREATE_REPLACE_DESTINATION and creating the .goutputstream-XXXXXX temporary file fails, the library unlinks the destination and recreates it without exclusive creation or symlink protection. A local attacker who can write to the destination directory can win that race and redirect the write to another file.

Is CVE-2026-86469 actively exploited?

No confirmed active exploitation of CVE-2026-86469 has been reported, but organizations should still patch proactively.

How to fix CVE-2026-86469?

No patch is currently available. Monitor vendor advisories for updates.

What is the CVSS score for CVE-2026-86469?

CVE-2026-86469 has a CVSS v3.1 base score of 5.3 (MEDIUM).

What are the technical details?

Original Advisory

A flaw was found in GLib2. When g_file_replace() is used with G_FILE_CREATE_REPLACE_DESTINATION and creating the .goutputstream-XXXXXX temporary file fails, the library unlinks the destination and recreates it without exclusive creation or symlink protection. A local attacker who can write to the destination directory can win that race and redirect the write to another file.

Weaknesses (CWE)

CWE-59Improper Link Resolution Before File Access

CWE-59 — Improper Link Resolution Before File Access: The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

[Architecture and Design] Follow the principle of least privilege when assigning access rights to entities in a software system. Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

Source: MITRE CWE corpus.