Vulnerability · Published Oct 23, 2026 · Assigned by mitre
CVE-2026-115638
Medium 4.3
In plain English
A medium-severity security flaw in Ironic from OpenStack. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.2%top 87.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | ironic | no fix listed | DEBIAN-CVE-2026-115638 |
| Debian:13 | ironic | no fix listed | DEBIAN-CVE-2026-115638 |
| Debian:14 | ironic | 1:39.0.0-7 | DEBIAN-CVE-2026-115638 |
Affected products (as reported)
Weakness: CWE-409 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L