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Message-ID: <5e9f1062-3d19-4693-919c-7d527ccc7f0e@jvf.cc>
Date: Wed, 3 Jun 2026 09:29:06 -0700
From: Jay Faulkner <jay@....cc>
To: oss-security@...ts.openwall.com
Subject: [OSSA-2026-018] Ironic: File overwrite on Ironic conductor via path
traversal in ISO handling (CVE-2026-48681)
====================================================================================
OSSA-2026-018: File overwrite on Ironic conductor via path traversal in
ISO handling
====================================================================================
:Date: June 03, 2026
:CVE: CVE-2026-48681
Affects
~~~~~~~
- Ironic: >=17.0.0 <26.1.7, >=27.0.0 <29.0.6, >=30.0.0 <32.0.2, >=33.0.0
<35.0.2
Description
~~~~~~~~~~~
Dmitry Tantsur (Red Hat) and Tuomo Tanskanen (Ericsson Software
Technology) from the Metal3.io Security Team reported a vulnerability in
Ironic's ISO handling code. A maliciously crafted ISO image can cause
Ironic to perform path traversal and overwrite files on a conductor's disk.
Similarly, in the anaconda deploy interface, the same vulnerability can
be exploited to perform path traversal and overwrite files on the target
disk during deployment.
Any Ironic user who has access to deploy nodes using configdrive, a
virtual media-based boot interface or the anaconda deploy interface can
exploit this issue.
Patches
~~~~~~~
- https://review.opendev.org/c/openstack/ironic/+/991388
(2023.1/antelope (unmaintained))
- https://review.opendev.org/c/openstack/ironic/+/991384 (2024.1/caracal
(unmaintained))
- https://review.opendev.org/c/openstack/ironic/+/991381 (2025.1/epoxy)
- https://review.opendev.org/c/openstack/ironic/+/991378 (2025.2/flamingo)
- https://review.opendev.org/c/openstack/ironic/+/991375 (2026.1/gazpacho)
- https://review.opendev.org/c/openstack/ironic/+/991366
(2026.2/hibiscus (development))
- https://review.opendev.org/c/openstack/ironic/+/991372 (Bugfix/33.0)
- https://review.opendev.org/c/openstack/ironic/+/991369 (Bugfix/34.0)
Credits
~~~~~~~
- Dmitry Tantsur from Red Hat
- Tuomo Tanskanen from Ericsson Software Technology
References
~~~~~~~~~~
- https://bugs.launchpad.net/ironic/+bug/2148333
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-48681
Notes
~~~~~
- Releases 2024.1 (caracal) and 2023.1 (antelope) are unmaintained.
Patches are provided as a courtesy. Releases 2023.2 (bobcat) and
2024.2 (dalmation) are end of life and have not had patches provided.
See https://releases.openstack.org for more information on supported
releases.
- Ironic bugfix branch patches will be available in git for interested
operators. We will not perform an additional release from these
branches.
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