CVE-2026-103870 Pulp-rpm: distribution tree publish creates directories from .treeinfo ids
An attacker with sync or upload permissions can create directories outside the intended work area and write metadata, potentially corrupting the repository structure.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-103870?
CVE-2026-103870 is a medium-severity path traversal vulnerability in Red Hat Satellite 6, published on 7 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-22
Which versions are affected by CVE-2026-103870?
How do I fix CVE-2026-103870?
No fix has been published for CVE-2026-103870 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-103870 being exploited?
There is no known exploitation of CVE-2026-103870 in the wild and no public exploit code.
Sources
Also known as GHSA-wx3c-cxf8-mpww.