Medium · CVSS 5.0CVE-2026-103870

Pulp-rpm: distribution tree publish creates directories from .treeinfo idsCVE-2026-103870

Answer in brief

CVE-2026-103870 records a Medium severity (CVSS 5.0) vulnerability in Pulp-rpm: distribution tree publish creates directories from .treeinfo ids. The current sources do not mark it as known exploited. The current feed maps Red Hat/python3.12-pulp-rpm (generic), Red Hat/python-pulp-rpm (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 7, 2026Updated Oct 7, 2026Source checked Oct 7, 2026First seen by HOL Oct 7, 2026Material review Oct 7, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.0
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Not reported

Why this deserves its current priority

CVSS is 5.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Red Hat/python3.12-pulp-rpm (generic), Red Hat/python-pulp-rpm (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Red Hat/python3.12-pulp-rpmgeneric	*	Not reported
Red Hat/python-pulp-rpmgeneric	*	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Red Hat/python3.12-pulp-rpm, Red Hat/python-pulp-rpm.
Review the reported fix. Source-reported workaround: Syncing distribution trees only from a trusted upstream avoids a crafted .treeinfo from that source. An account that can upload a tree directly can still supply the file. Otherwise, Red Hat is not aware of a practical temporary workaround that fully mitigates this issue or meets Red Hat Product Security's standards for usability, deployment, applicability, or stability. Customers are advised to apply the relevant security updates when they become available.

Evidence timeline and material changes

Published upstream
Oct 7, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 7, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 7, 2026

Sources and claim methodology

Upstream source description

A flaw was found in pulp-rpm when it publishes a distribution tree. Addon and variant ids from .treeinfo are used as directory names. A user who can sync or upload that tree can make the publish task create a new directory outside the task work area and write that tree's repository metadata and packages there, as the Pulp worker user. An existing file or directory is not replaced. The flaw does not disclose data and does not stop the service.

Quoted source text, attributed separately from HOL analysis.