CVE-2026-115638
OpenStack Ironic through 39.0.1 allows a denial of service via a configdrive that results in a...
OpenStack Ironic through 39.0.1 allows a denial of service via a configdrive that results in a very large amount of uncompressed data, aka a gzip bomb.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
OpenStack Ironic through 39.0.1 allows a denial of service via a configdrive that results in a very large amount of uncompressed data, aka a gzip bomb.
- Record
CVE-2026-115638- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-409
- Updated
- 2026-11-02
EUVDEUVD-2026-108570
OpenStack Ironic through 39.0.1 allows a denial of service via a configdrive that results in a very large amount of uncompressed data, aka a gzip bomb.
- Record
EUVD-2026-108570- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-48wg-78rx-fcjg
OpenStack Ironic through 39.0.1 allows a denial of service via a configdrive that results in a...
OpenStack Ironic through 39.0.1 allows a denial of service via a configdrive that results in a very large amount of uncompressed data, aka a gzip bomb.
- Record
GHSA-48wg-78rx-fcjg- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-409
- Updated
- 2026-11-02
NVD
OpenStack Ironic through 39.0.1 allows a denial of service via a configdrive that results in a very large amount of uncompressed data, aka a gzip bomb.
- Record
CVE-2026-115638- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-409
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2026-115638
OpenStack Ironic through 39.0.1 allows a denial of service via a configdrive that results in a very large amount of uncompressed data, aka a gzip bomb.
- Record
DEBIAN-CVE-2026-115638- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Updated
- 2026-11-07
OSVUBUNTU-CVE-2026-115638
OpenStack Ironic through 39.0.1 allows a denial of service via a configdrive that results in a very large amount of uncompressed data, aka a gzip bomb.
- Record
UBUNTU-CVE-2026-115638- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
ironicDebian:12 |
All versions, plus listed versions 1:21.1.0-31:21.1.0-3+deb12u11:21.3.0-11:21.4.0-11:21.4.0-2 Show 45 moreShow less1:21.4.0-31:21.4.0-41:21.4.4-0+deb12u11:21.4.4-0+deb12u21:22.1.0-11:23.0.0-11:23.0.0-21:23.0.0-31:23.0.0-41:24.0.0-11:24.1.0-11:24.1.1-11:24.1.1-21:24.1.1-31:26.0.0-11:26.0.0-21:26.1.0-11:26.1.0-21:26.1.0-31:26.1.1-11:26.1.1-21:26.1.1-31:26.1.1-41:29.0.0-11:29.0.0-21:29.0.0-31:29.0.0-41:29.0.0-51:29.0.0-61:29.0.0-71:32.0.0-11:32.0.0-21:32.0.0-41:32.0.0-51:32.0.0-61:32.0.0-71:34.0.0-11:35.0.0-11:35.0.0-21:35.0.1-11:35.0.1-101:35.0.1-21:35.0.1-31:35.0.1-51:35.0.1-6 |
None known |
ironicDebian:13 |
All versions, plus listed versions 1:29.0.0-71:29.0.5-0+deb13u11:29.0.5-0+deb13u21:29.0.5-0+deb13u31:32.0.0-1 Show 27 moreShow less1:32.0.0-21:32.0.0-41:32.0.0-51:32.0.0-61:32.0.0-71:34.0.0-11:35.0.0-11:35.0.0-21:35.0.1-11:35.0.1-101:35.0.1-21:35.0.1-31:35.0.1-51:35.0.1-61:35.0.1-71:35.0.1-81:35.0.1-91:38.0.0-11:38.0.0-21:38.0.0-31:39.0.0-11:39.0.0-21:39.0.0-31:39.0.0-41:39.0.0-51:39.0.0-61:39.0.0-7 |
None known |
ironicDebian:14 |
before 1:39.0.0-7, plus listed versions 1:29.0.0-71:32.0.0-11:32.0.0-21:32.0.0-41:32.0.0-5 Show 23 moreShow less1:32.0.0-61:32.0.0-71:34.0.0-11:35.0.0-11:35.0.0-21:35.0.1-11:35.0.1-101:35.0.1-21:35.0.1-31:35.0.1-51:35.0.1-61:35.0.1-71:35.0.1-81:35.0.1-91:38.0.0-11:38.0.0-21:38.0.0-31:39.0.0-11:39.0.0-21:39.0.0-31:39.0.0-41:39.0.0-51:39.0.0-6 |
1:39.0.0-7 |
openstackUbuntu:16.04:LTS |
All versions, plus listed versions 0.99.230.99.271.0.41.0.51.0.61.0.7.16.04.1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-115638 is a medium vulnerability (CVSS 4.3) in Openstack Ironic, published October 23, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.22%, the 12th percentile. Fixed in ironic 1:39.0.0-7.
References
Left out here: 13 versions. The JSON record has them.