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Fencer Intel
medium 5.0

CVE-2026-103870 json

Pulp-rpm: distribution tree publish creates directories from .treeinfo ids

published last mo. modified last mo. also EUVD-2026-94172

cvss
5.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 14%
public exploits
0
none known

Summary

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.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-103870 updated cvss 5.0

pulp-rpm: Distribution tree publish creates directories from .treeinfo ids

  • Red Hat Satellite 6 python-pulp-rpm, python3-pulp-rpm, python3.12-pulp-rpm
    affected: workaround, no fix available
  • Red Hat Update Infrastructure 4 for Cloud Providers python-pulp-rpm, python-pulp-rpm-client Red Hat Update Infrastructure 5 rhui5/rhua-rhel9, rhui5/rhua-tp-rhel9, python-pulp-rpm-client
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
last mo.

Exploit prediction

0.23% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 5.0 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N

Affected products

  • Red Hat Red Hat Satellite 6
  • Red Hat Red Hat Update Infrastructure 4 for Cloud Providers
  • Red Hat Red Hat Update Infrastructure 5

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.