CVE-2026-44919 json
OpenStack Ironic: Pre-Validation Checksum Calculation allows Denial of Service (DoS) via Infinite Block Devices
published 2026-05-14 5 mo ago modified 2026-10-26 13 d ago also GHSA-4g73-w726-53h3 , PYSEC-2026-2524 , EUVD-2026-30209
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 40%
- public exploits
- 0
- none known
Summary
In OpenStack Ironic through 35.x before a3f6d73, during image handling, an infinite loop in checksum calculations can occur via the file:///dev/zero URL.
Patch / fix
- OpenStack Ironic 29.0.6, 32.0.2, 35.0.2
- ironic Debian 12 1:21.4.4-0+deb12u1
- ironic Debian 13 1:29.0.5-0+deb13u1
- ironic Debian 14 1:35.0.1-3
debian advisories DEBIAN-CVE-2026-44919
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5 mo ago
Exploit prediction
0.47% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- bugs.launchpad.net https://bugs.launchpad.net/ironic/+bug/2150332 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
| OSV | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | ironic | <=36.0.0 |
no fix listed |
Affected products
- OpenStack Ironic
Classification
- Weakness
-
- CWE-696 Incorrect Behavior Order
References
-
opendev.org
/openstack/ironic/commit/a3f6d735ac3642ab95b49142c7305f072ae748d0
web, patch
-
security.openstack.org
/ossa/OSSA-2026-013.html
web, patch, vendor-advisory
-
bugs.launchpad.net
/ironic/+bug/2150332
exploit, web, issue-tracking, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-44919
advisory
-
opendev.org
/openstack/ironic
package
-
pypi.org
/project/ironic
package
-
github.com
/advisories/GHSA-4g73-w726-53h3
advisory
Sources
- CVE List CVE-2026-44919
- GitHub Advisory GHSA-4g73-w726-53h3
- NVD CVE-2026-44919
- OSV PYSEC-2026-2524
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.