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CVE-2026-115638medium4.3

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.

Impact

OpenStack Ironic through 39.0.1 may be vulnerable to a denial of service via a configdrive that results in a large amount of uncompressed data. The weakness is due to improper handling of highly compressed data. Affected versions include 30.0.0 through 39.0.1.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

OpenStack · mitre

Ironic

3 ranges
mitre version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

30.0.0 → through 32.1.1

semver versions

33.0.0 → through 35.1.1

semver versions

36.0.0 → through 39.0.1

semver versions

unaffected

unknown

Other versions: unaffected

Original source description

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.

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-115638

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-409 ↗

CWE-409 Improper Handling of Highly Compressed Data (Data Amplification)

mitre

Related →

Environment requirements

These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.

mitre · platform conditions

Any condition may hold

Vulnerable product

cpe:2.3:a:openstack:ironic:*:*:*:*:*:*:*:*

From (inclusive): 30.0.0

Through (inclusive): 32.1.1

Vulnerable product

cpe:2.3:a:openstack:ironic:*:*:*:*:*:*:*:*

From (inclusive): 33.0.0

Through (inclusive): 35.1.1

Vulnerable product

cpe:2.3:a:openstack:ironic:*:*:*:*:*:*:*:*

From (inclusive): 36.0.0

Through (inclusive): 39.0.1

Original applicability statements
[
  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:openstack:ironic:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "30.0.0",
            "versionEndIncluding": "32.1.1"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:openstack:ironic:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "33.0.0",
            "versionEndIncluding": "35.1.1"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:openstack:ironic:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "36.0.0",
            "versionEndIncluding": "39.0.1"
          }
        ]
      }
    ]
  }
]
Contributing organizations · 3
mitre

Assigning organization

2026-10-23
CISA-ADP

Additional data publisher

2026-10-26
CVE

Additional data publisher

2026-10-29

What changed

Follow changes
  1. CVE · CVE-2026-115638

    Observed 2026-10-29T17:27:03.533Z · upstream updated 2026-10-29T17:05:16.854Z

    References changed

    before

    [
  "https://bugs.launchpad.net/ironic/+bug/2171814"
]

    after

    [
  "https://bugs.launchpad.net/ironic/+bug/2171814",
  "http://www.openwall.com/lists/oss-security/2026/10/29/1"
]

Large field values are marked as truncated previews. Original source snapshots remain retained.

Showing up to 50 most recent observed changes.

References

2 sources
bugs.launchpad.net/ironic/+bug/2171814
Source referencemitre
www.openwall.com/lists/oss-security/2026/10/29/1
Security advisoryCVE