CVE-2026-103242: MLflow — HIGH

A heap-based buffer overflow flaw was found in rpm. RPMTAG_FILESIGNATURES in a crafted, unsigned RPM package's main header is declared with the wrong header type, causing hex2binv() to allocate a one-byte buffer and then write the tag's attacker-controlled, hex-decoded content — of attacker-chosen...

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 →
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
rpm	—	—	No patch

How severe is it?

CVSS 3.1

7.1 / 10

EPSS

N/A

Exploitation Status

No known exploitation

Sophistication

N/A

What is the attack surface?

AVLocal

ACLow

PRNone

UIRequired

SUnchanged

CNone

IHigh

AHigh

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-2026-103242?

A heap-based buffer overflow flaw was found in rpm. RPMTAG_FILESIGNATURES in a crafted, unsigned RPM package's main header is declared with the wrong header type, causing hex2binv() to allocate a one-byte buffer and then write the tag's attacker-controlled, hex-decoded content — of attacker-chosen length — past the end of that allocation. This is reachable via rpm2cpio, rpm2archive, and rpm -qlvp on an untrusted package.

Is CVE-2026-103242 actively exploited?

No confirmed active exploitation of CVE-2026-103242 has been reported, but organizations should still patch proactively.

How to fix CVE-2026-103242?

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

What is the CVSS score for CVE-2026-103242?

CVE-2026-103242 has a CVSS v3.1 base score of 7.1 (HIGH).

What are the technical details?

Original Advisory

A heap-based buffer overflow flaw was found in rpm. RPMTAG_FILESIGNATURES in a crafted, unsigned RPM package's main header is declared with the wrong header type, causing hex2binv() to allocate a one-byte buffer and then write the tag's attacker-controlled, hex-decoded content — of attacker-chosen length — past the end of that allocation. This is reachable via rpm2cpio, rpm2archive, and rpm -qlvp on an untrusted package.

Weaknesses (CWE)

CWE-122Heap-based Buffer Overflow

CWE-122 — Heap-based Buffer Overflow: The product writes past the end of a buffer that was allocated on the heap.

Pre-design: Use a language or compiler that performs automatic bounds checking.
[Architecture and Design] Use an abstraction library to abstract away risky APIs. Not a complete solution.

Source: MITRE CWE corpus.